C语言程序设计苏小红版答案.docx

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C语言程序设计苏小红版答案.docx

C语言程序设计苏小红版答案

Companynumber:

【0089WT-8898YT-W8CCB-BUUT-202108】

 

C语言程序设计苏小红版答案

#include<>

main()

{

floatx=,y=,z=;

printf("x=%f\n",x);

printf("y=%f\n",y);

printf("z=%f\n",z);

}

(1)#include<>

main()

{

inta=12,b=3;

floatx=,y=;

printf("%d\n",(float)(a*b)/2);

printf("%d\n",(int)x%(int)y);

}

#include<>

main()

{

intx,b0,b1,b2,s;

printf("Inputx:

");

scanf("%d",&x);

b2=x/100;

b1=(x-b2*100)/10;

b0=x%10;

s=b0*100+b1*10+b2;

printf("s=%d\n",s);

}

#include<>

#include<>

main()

{

floatrate=;

floatn,capital,deposit;

printf("Inputn,capital:

");

scanf("%f,%f",&n,&capital);

deposit=capital*pow(1+rate,n);

printf("deposit=%f\n",deposit);

}

#include<>

#include<>

main()

{

floata,b,c;

doublex,y;

printf("Inputa,b,c:

");

scanf("%f,%f,%f",&a,&b,&c);

x=(-b+sqrt(b*b-4*a*c))/(2*a);

y=(-b-sqrt(b*b-4*a*c))/(2*a);

printf("x=%f,y=%f\n",x,y);

}

(1)#include<>

main()

{

charc1='a',c2='b',c3='c';

printf("a%cb%cc%c\n",c1,c2,c3);

}

(2)#include<>

main()

{

inta=12,b=15;

printf("a=%d%%,b=%d%%\n",a,b);

}

(3)#include<>

main()

{

inta,b;

scanf("%2d%*2s%2d",&a,&b);

printf("%d,%d\n",a,b);

}

#include<>

main()

{

longa,b;

floatx,y;

scanf("%d,%d\n",&a,&b);

scanf("%f,%f\n",&x,&y);

printf("a=%d,b=%d\n",a,b);

printf("x=%f,b=%f\n",x,y);

}

#include<>

main()

{

floata;

printf("Innputa:

");

scanf("%f",&a);

if(a>=0)

{

a=a;

printf("a=%f\n",a);

}

else

{

a=-a;

printf("a=%f\n",a);

}

}

#include<>

main()

{

inta;

printf("Inputa:

");

scanf("%d",&a);

if(a%2==0)

{

printf("a是偶数");

}

else

{

printf("a是奇数");

}

}

#include<>

#include<>

main()

{

floata,b,c,s,area;

printf("Inputa,b,c:

");

scanf("%f,%f,%f",&a,&b,&c);

if(a+b>c&&a+c>b&&b+c>a)

{

s=(a+b+c)/2;

area=(float)sqrt(s*(s-a)*(s-b)*(s-c));

printf("area=%f\n",area);

}

else

{

printf("不是三角形");

}

}

#include<>

#include<>

main()

{

floata,b,c,x,y;

printf("Inputa,b,c:

");

scanf("%f,%f,%f",&a,&b,&c);

if(a==0)

{

printf("该方程不是一元二次方程\n");

}

if(b*b-4*a*c>0)

{

x=(-b+sqrt(b*b-4*a*c))/(2*a);

y=(-b-sqrt(b*b-4*a*c))/(2*a);

printf("x=%f,y=%f\n",x,y);

}

elseif(b*b-4*a*c==0)

{

x=-b/(2*a);

y=-b/(2*a);

printf("x=%f,y=%f\n",x,y);

}

else

{

printf("该方程无实根\n");

}

}

#include<>

main()

{

intyear,flag;

printf("Inputayear:

");

scanf("%d",&year);

if(year%4==0&&year%400!

=0||year%400==0)

{

flag=1;

}

else

{

flag=0;

}

if(flag==1)

{

printf("%disaleapyear!

\n",year);

}

else

{

printf("%disnotaleapyear!

\n",year);

}

}

#include<>

main()

{

intyear,flag;

printf("Inputayear:

");

scanf("%d",&year);

flag=year%400==0||year%4==0&&year%100!

=01:

0;

if(flag==1&&flag!

=0)

{

printf("%disaleapyear!

\n",year);

}

else

{

printf("%disnotaleapyear!

\n",year);

}

}

#include<>

main()

{

charch;

printf("Inputch:

");

scanf("%c",&ch);

if(ch>='a'&&ch<='z')

{

ch=getchar();

ch=ch-32;

printf("%c,%d\n",ch,ch);

}

elseif(ch>='A'&&ch<='Z')

{

ch=getchar();

ch=ch+32;

printf("%c,%d\n",ch,ch);

}

else

{

printf("%c",ch);

}

}

#include<>

main()

{

charch;

printf("Inputch:

");

scanf("%c",&ch);

if(ch>=48&&ch<=57)

{

printf("ch是数字字符\n");

}

elseif(ch>=65&&ch<=90)

{

printf("ch是大写字母\n");

}

elseif(ch>=97&&ch<=122)

{

printf("ch是小写字母\n");

}

elseif(ch==32)

{

printf("ch是空格\n");

}

else

{

printf("ch是其他字符\n");

}

}

#include<>

main()

{

intscore,grade;

printf("Inputscore:

");

scanf("%d",&score);

grade=score/10;

if(score<0||score>100)

{

printf("Inputerror\n");

}

if(score>=90&&score<=100)

{

printf("%d--A\n",score);

}

elseif(score>=80&&score<90)

{

printf("%d--B\n",score);

}

elseif(score>=70&&score<80)

{

printf("%d--C\n",score);

}

elseif(score>=60&&score<70)

{

printf("%d--D\n",score);

}

elseif(score>=0&&score<60)

{

printf("%d--E\n",score);

}

}

#include<>

main()

{

intyear,month;

printf("Inputyear,month:

");

scanf("%d,%d",&year,&month);

if(month>12||month<=0)

{

printf("errormonth\n");

}

else

{

switch(year,month)

{

case12:

case10:

case8:

case7:

case5:

case3:

case1:

printf("31天\n");

break;

case11:

case9:

case6:

case4:

printf("30天\n");

break;

case2:

if(year%4==0&&year!

=0||year%400==0)

{

printf("29天\n");

}

else

{

printf("28天\n");

}

break;

default:

printf("Inputerror\n");

}

}

}

(1)#include<>

main()

{

inti,j,k;

charspace='';

for(i=1;i<=4;i++)

{

for(j=1;j<=i;j++)

{

printf("%c",space);

}

for(k=1;k<=6;k++)

{

printf("*");

}

printf("\n");

}

}

(2)#include<>

main()

{

intk=4,n;

for(n=0;n

{

if(n%2==0)continue;

k--;

}

printf("k=%d\n,n=%d\n",k,n);

}

(3)#include<>

main()

{

intk=4,n;

for(n=0;n

{

if(n%2==0)break;

k--;

}

printf("k=%d,n=%d\n",k,n);

}

(1)#include<>

main()

{

inti,sum=0;

for(i=1;i<=101;i++)

{

sum=sum+i;

}

printf("sum=%d\n",sum);

}

(2)#include<>

main()

{

longi;

longterm,sum=0;

for(i=1;i<=101;i=i+2)

{

term=i*(i+1)*(i+2);

sum=sum+term;

}

printf("sum=%ld\n",sum);

}

(4)#include<>

#include<>

main()

{

intn=1;

floatterm=,sign=1,sum=0;

while(term<=-1e-4||term>=1e-4)

{

term=sign;

sum=sum+term;

sign=sign+n;

n++;

}

printf("sum=%f\n",sum);

}

(5)#include<>

#include<>

main()

{

intn=1,count=1;

floatx;

doublesum,term;

printf("Inputx:

");

scanf("%f",&x);

sum=x;

term=x;

do{

term=-term*x*x/((n+1)*(n+2));

sum=sum+term;

n=n+2;

count++;

}while(fabs(term)>=1e-5);

printf("sin(x)=%f,count=%d\n",sum,count);

}

#include<>

main()

{

intx=1,find=0;

while(!

find)

{

if(x%2==1&&x%3==2&&x%5==4&&x%6==5&&x%7==0)

{

printf("x=%d\n",x);

find=1;

x++;

}

}

}

/*intx,find=0;

for(x=1;!

find;x++)

{

if(x%2==1&&x%3==2&&x%5==4&&x%6==5&&x%7==0)

{

printf("x=%d\n",x);

find=1;

}

}

}*/

#include<>

main()

{

inti,n;

longp=1,m=1;

printf("Inputn:

");

scanf("%d",&n);

for(i=1;i<=n;i++)

{

p=i*i;

m=i*i*i;

printf("p=%d,m=%d\n",i,p,i,m);

}

}

#include<>

main()

{

floatc,f;

for(c=-40;c<=110;c=c+10)

{

f=9/5*c+32;

printf("f=%f\n",f);

}

}

#include<>

#include<>

main()

{

intn;

doublec=,x;

do{

x=x*pow(1+c,12)-1000;

n++;

}while(x>0);

printf("x=%d\n",x);

}

#include<>

main()

{

intn=0;

floata=,c;

printf("Inputc:

");

scanf("%f",&c);

do

{

a=a*(1+c);

n++;

}while(a<=200);

printf("n=%d\n",n);

}

#include<>

#include<>

main()

{

intn=1,count=1;

doublesum=1,term=1;

while(fabs(term)>=1e-5)

{

term=pow(-1,count)*(n+2));

sum=sum+term;

n=n+2;

count++;

}

sum=4*sum;

printf("sum=%f,count=%d\n",sum,count);

}

#include<>

#include<>

main()

{

intn=1,count=1;

doublesum=1,term=1;

while(fabs(term)>=1e-5)

{

term=term*n);

sum=sum+term;

n++;

count++;

}

printf("sum=%f,count=%d\n",sum,count);

}

#include<>

#include<>

main()

{

intx;

for(x=100;x<=999;x++)

{

if(x==pow(x/100,3)+pow(x/10%10,3)+pow(x%10,3))

printf("x=%d\n",x);

}

}

#include<>

main()

{

inti=0,n;

longsum=0,term=1;

printf("Inputn:

");

scanf("%d",&n);

do{

i++;

term=term*i;

sum=sum+term;

}while(sum

printf("%d\n",i-1);

}

#include<>

main()

{

inti,n,m,count=0,sum=0;

printf("Inputn:

");

scanf("%d",&n);

for(i=1;i<=n;i++)

{

printf("Inputm:

");

scanf("%d",&m);

if(m>0)

{

sum=sum+m;

count++;

}

else

{

break;

}

printf("sum=%d,count=%d\n",sum,count);

}

}

#include<>

main()

{

inti,n,m,count=0,sum=0;

printf("Inputn:

");

scanf("%d",&n);

for(i=1;i<=n;i++)

{

printf("Inputm:

");

scanf("%d",&m);

if(m>0||m<0)

{

sum=sum+m;

count++;

}

else

{

break;

}

printf("sum=%d,count=%d\n",sum,count);

}

}

#include<>

main()

{

intx,y,z;

for(x=0;x<=17;x++)

{

for(y=0;y<=25;y++)

{

3*x+2*y+z==50;

z=30-x-y;

if(3*x+2*y+z==50&&x+y+z==30)

printf("x=%d,y=%d,z=%d\n",x,y,z);

}

}

}

#include<>

main()

{

intx,y;

for(x=0;x<=98;x++)

{

y=98-x;

2*x+4*y==386;

if(x+y==98&&2*x+4*y==386)

{

printf("x=%d,y=%d\n",x,y);

}

}

}

#include<>

main()

{

intx,y,z;

for(x=0;x<=20;x++)

{

for(y=0;y<=33;y++)

{

3*y+5*x+z/==100;

z=100-x-y;

if(5*x+3*y+z/==100&&z+x+y==100)

{

printf("x=%d,y=%d,z=%d\n",x,y,z);

}

}

}

}

#include<>

main()

{

intx,y,z;

for(x=1;x<=9;x++)

{

for(y=1;y<=17;y++)

{

10*x+5*y+z==100;

z=50-x-y;

if(10*x+5*y+z==100&&x+y+z==50&&z>0)

{

printf("x=%d,y=%d,z=%d\n",x,y,z);

}

}

}

}

#include<>

intSquare(inti)

{

returni*i;

}

intmain()

{

inti=0;

i=Square(i);

for(;i<3;i++)

{

staticinti=1;

i+=Square(i);

printf("%d,",i);

}

printf("%d\n",i);

return0;

}

#include<>

inthour,minute,second;

voidupdate()

{

second++;

if(second==60)

{

second=0;

minute++;

}

if(minute==60)

{

minute=0;

hour++;

}

if(hour==24)

hour=0;

}

voiddisplay()

{

printf("%d,%d,%d\n",hour,minute,second);

}

voiddelay()

{

intt;

}

intmain()

{

inti;

voidupdaye(),display(),delay();

for(i=0;i<1000000;i++)

{

update();

display();

delay();

}

return0;

}

#include<>

intGetMax(inta,intb);

intmain()

{

intx,y,max;

printf("Inputx,y:

");

scanf("%d,%d",&x,&y);

max=GetMax(x,y);

printf("max=%d\n",max);

return0;

}

intGetMax(intm,intn)

{

if(m>=n)

returnm;

else

returnn;

}

#include<>

intLCM(intn,intm);

intmain()

{

inta,b;

printf("Inputa,b:

");

scanf("%d,%d",&a,&b);

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