C++经典程序代码大全.docx
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C++经典程序代码大全
//根据半径计算圆的周长和面积
#include
constfloatPI=3.1416;//声明常量(只读变量)PI为3.1416
floatfCir_L(float);//声明自定义函数fCir_L()的原型
floatfCir_S(float);//声明自定义函数fCir_S()的原型
//以下是main()函数
main()
{
floatr,l,s;//声明3个变量
cout<<"r=";//显示字符串
cin>>r;//键盘输入
l=fCir_L(r);//计算圆的周长,赋值给变量l
s=fCir_S(r);//计算圆的面积,赋值给变量s
cout<<"l="<cout<<"\ns="<}//定义计算圆的周长的函数fCir_L()floatfCir_L(floatx){floatz=-1.0;//声明局部变量if(x>=0.0)//如果参数大于0,则计算圆的周长z=2*PI*x;return(z);//返回函数值}//定义计算圆的面积的函数fCir_S()floatfCir_S(floatx){floatz=-1.0;//声明局部变量if(x>=0.0)//如果参数大于0,则计算圆的面积z=PI*x*x;return(z);//返回函数值}/*Program:P1-2.CPPWrittenby:HapDatewritten:02:11:10*/ #includevoidmain(void){doubles1,s2,s3;s1=1.5;/*对变量s1赋值*/cout<<"s1="</*对变量s2赋值*/s2=2.5;cout<<"s2="<s3=/*对变量s3赋值*/3.5;cout<<"s3="<cout<<"s1+s2+s3="<//计算并显示cout<<"s1+s2+s3="<}#includemain(){doubler=1.0;cout<<"r="<doublel;l=2*3.1416*r;//计算圆的周长,赋值给变量lcout<<"l="<doubles=3.1416*r*r;//计算圆的面积,赋值给变量scout<<"s="<cout<<"r=";//显示提示输入的信息cin>>r;//键盘输入l=2*3.1416*r;//计算圆的周长,赋值给变量lcout<<"l="<s=3.1416*r*r;cout<<"s="<}#include//包含iostream.h头文件voidmain(){//输出字符常量、变量和字符串charc1='A';cout<<'W';cout<cout<<"Thisisatest."<cout<<"------------------"<//输出整型常量、变量和表达式intn=100;cout<<10;cout<cout<<2*n<cout<<"------------------"<//输出浮点型常量、变量和表达式doublepi=3.1415926,r=10.0,s=pi*r*r;cout<cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"\ns="<
}
//定义计算圆的周长的函数fCir_L()
floatfCir_L(floatx)
floatz=-1.0;//声明局部变量
if(x>=0.0)//如果参数大于0,则计算圆的周长
z=2*PI*x;
return(z);//返回函数值
//定义计算圆的面积的函数fCir_S()
floatfCir_S(floatx)
if(x>=0.0)//如果参数大于0,则计算圆的面积
z=PI*x*x;
/*Program:
P1-2.CPP
Writtenby:
Hap
Datewritten:
02:
11:
10
*/
voidmain(void)
doubles1,s2,s3;
s1=1.5;/*对变量s1赋值*/
cout<<"s1="</*对变量s2赋值*/s2=2.5;cout<<"s2="<s3=/*对变量s3赋值*/3.5;cout<<"s3="<cout<<"s1+s2+s3="<//计算并显示cout<<"s1+s2+s3="<}#includemain(){doubler=1.0;cout<<"r="<doublel;l=2*3.1416*r;//计算圆的周长,赋值给变量lcout<<"l="<doubles=3.1416*r*r;//计算圆的面积,赋值给变量scout<<"s="<cout<<"r=";//显示提示输入的信息cin>>r;//键盘输入l=2*3.1416*r;//计算圆的周长,赋值给变量lcout<<"l="<s=3.1416*r*r;cout<<"s="<}#include//包含iostream.h头文件voidmain(){//输出字符常量、变量和字符串charc1='A';cout<<'W';cout<cout<<"Thisisatest."<cout<<"------------------"<//输出整型常量、变量和表达式intn=100;cout<<10;cout<cout<<2*n<cout<<"------------------"<//输出浮点型常量、变量和表达式doublepi=3.1415926,r=10.0,s=pi*r*r;cout<cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
/*对变量s2赋值*/s2=2.5;
cout<<"s2="<s3=/*对变量s3赋值*/3.5;cout<<"s3="<cout<<"s1+s2+s3="<//计算并显示cout<<"s1+s2+s3="<}#includemain(){doubler=1.0;cout<<"r="<doublel;l=2*3.1416*r;//计算圆的周长,赋值给变量lcout<<"l="<doubles=3.1416*r*r;//计算圆的面积,赋值给变量scout<<"s="<cout<<"r=";//显示提示输入的信息cin>>r;//键盘输入l=2*3.1416*r;//计算圆的周长,赋值给变量lcout<<"l="<s=3.1416*r*r;cout<<"s="<}#include//包含iostream.h头文件voidmain(){//输出字符常量、变量和字符串charc1='A';cout<<'W';cout<cout<<"Thisisatest."<cout<<"------------------"<//输出整型常量、变量和表达式intn=100;cout<<10;cout<cout<<2*n<cout<<"------------------"<//输出浮点型常量、变量和表达式doublepi=3.1415926,r=10.0,s=pi*r*r;cout<cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
s3=/*对变量s3赋值*/3.5;
cout<<"s3="<cout<<"s1+s2+s3="<//计算并显示cout<<"s1+s2+s3="<}#includemain(){doubler=1.0;cout<<"r="<doublel;l=2*3.1416*r;//计算圆的周长,赋值给变量lcout<<"l="<doubles=3.1416*r*r;//计算圆的面积,赋值给变量scout<<"s="<cout<<"r=";//显示提示输入的信息cin>>r;//键盘输入l=2*3.1416*r;//计算圆的周长,赋值给变量lcout<<"l="<s=3.1416*r*r;cout<<"s="<}#include//包含iostream.h头文件voidmain(){//输出字符常量、变量和字符串charc1='A';cout<<'W';cout<cout<<"Thisisatest."<cout<<"------------------"<//输出整型常量、变量和表达式intn=100;cout<<10;cout<cout<<2*n<cout<<"------------------"<//输出浮点型常量、变量和表达式doublepi=3.1415926,r=10.0,s=pi*r*r;cout<cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"s1+s2+s3="<//计算并显示cout<<"s1+s2+s3="<}#includemain(){doubler=1.0;cout<<"r="<doublel;l=2*3.1416*r;//计算圆的周长,赋值给变量lcout<<"l="<doubles=3.1416*r*r;//计算圆的面积,赋值给变量scout<<"s="<cout<<"r=";//显示提示输入的信息cin>>r;//键盘输入l=2*3.1416*r;//计算圆的周长,赋值给变量lcout<<"l="<s=3.1416*r*r;cout<<"s="<}#include//包含iostream.h头文件voidmain(){//输出字符常量、变量和字符串charc1='A';cout<<'W';cout<cout<<"Thisisatest."<cout<<"------------------"<//输出整型常量、变量和表达式intn=100;cout<<10;cout<cout<<2*n<cout<<"------------------"<//输出浮点型常量、变量和表达式doublepi=3.1415926,r=10.0,s=pi*r*r;cout<cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//计算并显示cout<<"s1+s2+s3="<}#includemain(){doubler=1.0;cout<<"r="<doublel;l=2*3.1416*r;//计算圆的周长,赋值给变量lcout<<"l="<doubles=3.1416*r*r;//计算圆的面积,赋值给变量scout<<"s="<cout<<"r=";//显示提示输入的信息cin>>r;//键盘输入l=2*3.1416*r;//计算圆的周长,赋值给变量lcout<<"l="<s=3.1416*r*r;cout<<"s="<}#include//包含iostream.h头文件voidmain(){//输出字符常量、变量和字符串charc1='A';cout<<'W';cout<cout<<"Thisisatest."<cout<<"------------------"<//输出整型常量、变量和表达式intn=100;cout<<10;cout<cout<<2*n<cout<<"------------------"<//输出浮点型常量、变量和表达式doublepi=3.1415926,r=10.0,s=pi*r*r;cout<cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
doubler=1.0;
cout<<"r="<doublel;l=2*3.1416*r;//计算圆的周长,赋值给变量lcout<<"l="<doubles=3.1416*r*r;//计算圆的面积,赋值给变量scout<<"s="<cout<<"r=";//显示提示输入的信息cin>>r;//键盘输入l=2*3.1416*r;//计算圆的周长,赋值给变量lcout<<"l="<s=3.1416*r*r;cout<<"s="<}#include//包含iostream.h头文件voidmain(){//输出字符常量、变量和字符串charc1='A';cout<<'W';cout<cout<<"Thisisatest."<cout<<"------------------"<//输出整型常量、变量和表达式intn=100;cout<<10;cout<cout<<2*n<cout<<"------------------"<//输出浮点型常量、变量和表达式doublepi=3.1415926,r=10.0,s=pi*r*r;cout<cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
doublel;
l=2*3.1416*r;//计算圆的周长,赋值给变量l
cout<<"l="<doubles=3.1416*r*r;//计算圆的面积,赋值给变量scout<<"s="<cout<<"r=";//显示提示输入的信息cin>>r;//键盘输入l=2*3.1416*r;//计算圆的周长,赋值给变量lcout<<"l="<s=3.1416*r*r;cout<<"s="<}#include//包含iostream.h头文件voidmain(){//输出字符常量、变量和字符串charc1='A';cout<<'W';cout<cout<<"Thisisatest."<cout<<"------------------"<//输出整型常量、变量和表达式intn=100;cout<<10;cout<cout<<2*n<cout<<"------------------"<//输出浮点型常量、变量和表达式doublepi=3.1415926,r=10.0,s=pi*r*r;cout<cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
doubles=3.1416*r*r;//计算圆的面积,赋值给变量s
cout<<"s="<
cout<<"r=";//显示提示输入的信息
cout<<"l="<s=3.1416*r*r;cout<<"s="<}#include//包含iostream.h头文件voidmain(){//输出字符常量、变量和字符串charc1='A';cout<<'W';cout<cout<<"Thisisatest."<cout<<"------------------"<//输出整型常量、变量和表达式intn=100;cout<<10;cout<cout<<2*n<cout<<"------------------"<//输出浮点型常量、变量和表达式doublepi=3.1415926,r=10.0,s=pi*r*r;cout<cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
s=3.1416*r*r;
#include//包含iostream.h头文件
voidmain()
//输出字符常量、变量和字符串
charc1='A';
cout<<'W';
cout<cout<<"Thisisatest."<cout<<"------------------"<//输出整型常量、变量和表达式intn=100;cout<<10;cout<cout<<2*n<cout<<"------------------"<//输出浮点型常量、变量和表达式doublepi=3.1415926,r=10.0,s=pi*r*r;cout<cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"Thisisatest."<cout<<"------------------"<//输出整型常量、变量和表达式intn=100;cout<<10;cout<cout<<2*n<cout<<"------------------"<//输出浮点型常量、变量和表达式doublepi=3.1415926,r=10.0,s=pi*r*r;cout<cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"------------------"<//输出整型常量、变量和表达式intn=100;cout<<10;cout<cout<<2*n<cout<<"------------------"<//输出浮点型常量、变量和表达式doublepi=3.1415926,r=10.0,s=pi*r*r;cout<cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//输出整型常量、变量和表达式
intn=100;
cout<<10;
cout<cout<<2*n<cout<<"------------------"<//输出浮点型常量、变量和表达式doublepi=3.1415926,r=10.0,s=pi*r*r;cout<cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<2*n<cout<<"------------------"<//输出浮点型常量、变量和表达式doublepi=3.1415926,r=10.0,s=pi*r*r;cout<cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"------------------"<//输出浮点型常量、变量和表达式doublepi=3.1415926,r=10.0,s=pi*r*r;cout<cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//输出浮点型常量、变量和表达式
doublepi=3.1415926,r=10.0,s=pi*r*r;
cout<cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<cout<cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<
cout<<2*r*pi<cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"------------------"<//一个cout可以输出多项数据cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//一个cout可以输出多项数据
cout<<'W'<<""<cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"Thisisatest."<cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"pi="<}#include//包含iostream.h头文件main(){//输入输出字符charc;cin>>c;cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//输入输出字符
charc;
cin>>c;
cout<<"c="<//输入输出整型数据intn;cin>>n;cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//输入输出整型数据
intn;
cin>>n;
cout<<"n="<//输入输出浮点型数据doublex;cin>>x;cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//输入输出浮点型数据
doublex;
cin>>x;
cout<<"x="<//输入提示cout<<"n=";cin>>n;cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//输入提示
cout<<"n=";
cout<<"n="<//多项输入cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//多项输入
cout<<"cnx"<cin>>c>>n>>x;cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cin>>c>>n>>x;
cout<<"c="<}#include//包含iostream.h头文件main(){//声明整型变量inta,b;//从键盘上为整型变量赋值cout<<"a=";cin>>a;cout<<"b=";cin>>b;//整型数的算术运算cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//声明整型变量
inta,b;
//从键盘上为整型变量赋值
cout<<"a=";
cin>>a;
cout<<"b=";
cin>>b;
//整型数的算术运算
cout<cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<//测试溢出shortn=32767,m;//n取short类型的最大值cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//测试溢出
shortn=32767,m;//n取short类型的最大值
cout<<"n="<m=n+1;//引起溢出cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
m=n+1;//引起溢出
cout<<"n+1="<}#include//包含iostream.h头文件main(){//声明变量,并初始化inta=010,b=10,c=0X10;//以十进制形式显示数据cout<<"DEC:";cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//声明变量,并初始化
inta=010,b=10,c=0X10;
//以十进制形式显示数据
cout<<"DEC:
";
cout<<"a="<cout<<"b="<cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"b="<
cout<<"c="<//以八进制形式显示数据cout<<"OCT:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//以八进制形式显示数据
cout<<"OCT:
cout<cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"a="<cout<<"b="<cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"c="<//以十六进制形式显示数据cout<<"HEX:";cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//以十六进制形式显示数据
cout<<"HEX:
cout<cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"a="<cout<<"b="<cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"c="<//八、十和十六进制数混合运算并输出cout<<"a+b+c=";cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//八、十和十六进制数混合运算并输出
cout<<"a+b+c=";
cout<cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<//测试八、十和十六进制输入cout<<"DEC:a=";cin>>a;cout<<"OCT:b=";cin>>b;cout<<"HEX:a=";cin>>c;cout<<"DEC:"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//测试八、十和十六进制输入
a=";cin>>a;
b=";cin>>b;
a=";cin>>c;
"<cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"a="<cout<<"b="<cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"c="<}#include//包含iostream.h头文件#include//iomanip.h头文件包含setprecision()的定义main(){//float型变量的声明、输入、计算和输出floatfx,fy;cout<<"fx=";cin>>fx;cout<<"fy=";cin>>fy;cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
#include//iomanip.h头文件包含setprecision()的定义
//float型变量的声明、输入、计算和输出
floatfx,fy;
cout<<"fx=";
cin>>fx;
cout<<"fy=";
cin>>fy;
cout<cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//cout<//double型变量的声明、输入、计算和输出floatdx,dy;cout<<"dx=";cin>>dx;cout<<"dy=";cin>>dy;cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//double型变量的声明、输入、计算和输出
floatdx,dy;
cout<<"dx=";
cin>>dx;
cout<<"dy=";
cin>>dy;
cout<cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//cout<//测试float和double类型数据的有效位fx=10.0;fy=6.0;floatfz=fx/fy;dx=10.0;dy=6.0;doubledz=dx/dy;cout<<"fz=";cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//测试float和double类型数据的有效位
fx=10.0;fy=6.0;
floatfz=fx/fy;
dx=10.0;dy=6.0;
doubledz=dx/dy;
cout<<"fz=";
cout<cout<<"dz=";cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"dz=";
cout<//float型溢出floatx=3.5e14;cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//float型溢出
floatx=3.5e14;
cout<<"x="<cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"x*x="<cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"x*x*x="<}#include//包含iostream.h头文件main(){//字符类型变量的声明charc1='A';charc2;//字符数据的运算及输出c2=c1+32;cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//字符类型变量的声明
charc2;
//字符数据的运算及输出
c2=c1+32;
cout<<"c1="<cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"c2="<//输出字符及ASCII码cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//输出字符及ASCII码
cout<"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
"<cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
"<cout<<'$'<<":"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<'$'<<":
"<//输入字符cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//输入字符
cout<<"c1c2"<cin>>c1>>c2;cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cin>>c1>>c2;
cout<<"c1="<}#include//包含iostream.h头文件main(){charc1='\a',TAB='\t';//阵铃一声cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
charc1='\a',TAB='\t';
//阵铃一声
cout<//使用水平制表符cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//使用水平制表符
cout<<1<//使用双引号cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//使用双引号
cout<<"Hesaid\"Thankyou\"."<//使用回车换行cout<<"abc\n"<<"def"<<'\n';}#include//包含iostream.h头文件main(){//声明bool变量,并初始化boolflag1=false,flag2=true;//输出布尔常量和变量cout<<"false:"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//使用回车换行
cout<<"abc\n"<<"def"<<'\n';
//声明bool变量,并初始化
boolflag1=false,flag2=true;
//输出布尔常量和变量
cout<<"false:
"<cout<<"true:"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"true:
"<cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"flag1="<cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"flag2="<//布尔变量的赋值和输出intx=1;flag1=x>0;//存放关系运算结果cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//布尔变量的赋值和输出
intx=1;
flag1=x>0;//存放关系运算结果
cout<<"flag1="<flag2=flag1;//bool类型变量相互赋值cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
flag2=flag1;//bool类型变量相互赋值
cout<<"flag2="<//布尔变量超界处理flag1=100;cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//布尔变量超界处理
flag1=100;
cout<<"flag1="<flag2=-100;cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
flag2=-100;
cout<<"flag2="<}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler,l,s;//输入圆的半径cout<<"r=";cin>>r;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
constdoublePI=3.1416;//声明常量(const变量)PI为3.1416
//声明3个变量
doubler,l,s;
//输入圆的半径
cout<<"r=";
cin>>r;
//计算圆的周长
l=2*PI*r;
cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<}#includemain(){//定义枚举类型,并指定其枚举元素的值enumcolor{RED=3,YELLOW=6,BLUE=9};//声明枚举变量a和b,并为枚举变量a赋初值enumcolora=RED;colorb;//合法,与C语言不同//输出枚举常量cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//计算圆的面积
s=PI*r*r;
//定义枚举类型,并指定其枚举元素的值
enumcolor{
RED=3,
YELLOW=6,
BLUE=9
};
//声明枚举变量a和b,并为枚举变量a赋初值
enumcolora=RED;
colorb;//合法,与C语言不同
//输出枚举常量
cout<<"RED="<cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"YELLOW="<cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"BLUE="<//枚举变量的赋值和输出b=a;a=BLUE;cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//枚举变量的赋值和输出
b=a;
a=BLUE;
cout<<"a="<cout<<"b="<//a=100;错误!//a=6也错误!//枚举变量的关系运算b=BLUE;//枚举变量的赋值运算cout<<"a}#includeconstdoublePI=3.1416;//声明常量(const变量)PI为3.1416main(){//声明3个变量doubler=3,l,s;//计算圆的周长l=2*PI*r;cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//a=100;错误!
//a=6也错误!
//枚举变量的关系运算
b=BLUE;//枚举变量的赋值运算
cout<<"a
doubler=3,l,s;
cout<<"l="<//计算圆的面积s=PI*r*r;cout<<"s="<//验证赋值误差intil,is;il=l;is=s;cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//验证赋值误差
intil,is;
il=l;
is=s;
cout<<"il="<cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"is="<}#includemain(){//变量声明charc;doublex,y;//测试自增cout<<"++EandE++:"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//变量声明
doublex,y;
//测试自增
cout<<"++EandE++:
"<c='B';cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
c='B';
cout<<"c="<<++c<c='B';cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"c="<x=1.5;y=5+++x;//加号后的空格不能少cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
x=1.5;
y=5+++x;//加号后的空格不能少
cout<<"y="<x=1.5;y=5+x++;cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
y=5+x++;
cout<<"y="<cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"--------------------"<//测试自减cout<<"--EandE--:"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//测试自减
cout<<"--EandE--:
"<c='B';cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"c="<<--c<c='B';cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"c="<x=1.5;y=5+--x;cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
y=5+--x;
cout<<"y="<x=1.5;y=5+x--;cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
y=5+x--;
cout<<"y="<}#includemain(){inta=3,b=2;//输出关系表达式cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
inta=3,b=2;
//输出关系表达式
cout<cout<<(ab)<<(a>=b)<<(a==b)<<(a!=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<(ab)<<(a>=b)<<(a==b)<<(a!
=b)<boolflag=2*acout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
boolflag=2*a
cout<<"flag="<}#includemain(){floata=3.5,b=2.1,c=0;cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
floata=3.5,b=2.1,c=0;
cout<<"a="<//与运算cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//与运算
cout<<"a&&b="<<(a&&b)<cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"a&&c="<<(a&&c)<//或运算cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//或运算
cout<<"a||b="<<(a||b)<cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"a||c="<<(a||c)<//非运算cout<<"!a="<a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//非运算
cout<<"!
a="<
a<c="<c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
c="<
c<//关系运算和逻辑运算boolflag=a>=0&&a<=5;//变量a在[0,5]区间cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//关系运算和逻辑运算
boolflag=a>=0&&a<=5;//变量a在[0,5]区间
cout<<"a=>0&&a<=5="<//算术运算、关系运算和逻辑运算cout<<"a+5>2*b+2||a2*b+2||a}#includemain(){//按位与运算cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//算术运算、关系运算和逻辑运算
cout<<"a+5>2*b+2||a2*b+2||a
//按位与运算
cout<<"24&12="<<(24&12)<//按位异或运算cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//按位异或运算
cout<<"24^12="<<(24^12)<//按位或运算cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//按位或运算
cout<<"24|12="<<(24|12)<//按位取反运算cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//按位取反运算
cout<<"~24="<<(~24)<//左移位运算cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//左移位运算
cout<<"5<<3="<<(5<<3)<cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"-5<<3="<<(-5<<3)<//右移位运算cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//右移位运算
cout<<"5>>3="<<(5>>3)<cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
cout<<"-5>>3="<<(-5>>3)<}#includemain(){inta=1,b=1,c=3;//显示a,b,c的值cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
inta=1,b=1,c=3;
//显示a,b,c的值
cout<<"a="<//计算显示(1)b+=a+2*c%5;的结果b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);cout<<"(1)b="<//计算显示(2)a<<=c-2*b;的结果a=1,b=1,c=3;a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);cout<<"(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//计算显示
(1)b+=a+2*c%5;的结果
b+=a+2*c%5;//相当于表达式语句b=b+(a+2*c%5);
cout<<"
(1)b="<
(2)a<<=c-2*b;的结果
a=1,b=1,c=3;
a<<=c-2*b;//相当于表达式语句a=a<<(c-2*b);
(2)a="<//计算显示(3)a*=b=c=3;的结果a=1,b=1,c=3;a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//计算显示(3)a*=b=c=3;的结果
a*=b=c=3;//相当于语句组c=3;b=c;a=a*b;
cout<<"(3)a="<//计算显示(4)a+=b+=c;的结果a=1,b=1,c=3;a+=b+=c;//相当于语句组b=b+c;a=a+b;cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//计算显示(4)a+=b+=c;的结果
a+=b+=c;//相当于语句组b=b+c;a=a+b;
cout<<"(4)a="<//计算显示(5)a-=b=++c+2;的结果a=1,b=1,c=3;a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;cout<<"(5)a="<
//计算显示(5)a-=b=++c+2;的结果
a-=b=++c+2;//相当于语句组++c;b=b+c+2;a=a-b;
cout<<"(5)a="<