华中科技大学标准C语言程序设计及应用习题答案.docx

1、华中科技大学标准C语言程序设计及应用习题答案第二章一.选择题1.C 2.B D 3.A 4.A 5. D 6.C 7.D 8.C 9.A 10.D11.B 12.D 13.C 14.D 15.A16.B 17.A 18.B 100011 001111二.判断题1.错2.错3.错4.错三.填空题1. B 662. n1=%dnn2=%dn3. 0四.计算1(1)x|y = 0x002f(2)xy = 0x0026(3)x&y = 0x0009;(4)x+y = 0xffc6(5)x=4 0x00022(1)6(2)50(3)1(4)16(5)1(6)203(1)0(2)1(3)1(4)4(5)8

2、(6)14(1)12(2)0(3)1(4)27(5)1(6)6(7)24(8)27(9)295(1)0(2)1(3)1(4)3(5)2五.程序分析题程序1b=20 a=3600 程序2第三章一.填空题1.s=62.963.(1) scanf(%c,&c); (2) c-32 更好的答案：c-(a-A)2.1 main()int a,b;printf(please input a & b:);scanf(%d%d,&a,&b);printf(nmax is %dn,(ab)?a:b);2.2int max(int x,int y);main()int a,b,c,max;printf(pleas

3、e input a & b & c:);scanf(%d%d%d,&a,&b,&c);max=ab?a:b;max=cmax?c:max;printf(nmax is %dn,max);2.3main() int i=0,sum=0; while(i=100) sum+=i; i+; printf(1+2+3+.+100=%dn,sum);2.4main() int i; int a=10,b=-3; int c; printf(%6d%6d,a,b); for(i=2;i10;i+) c=3*b+a; printf(%6d,c); a=b; b=c; printf(n);2.5main()

4、int i; while(1) printf(please input a data(0:exit):); scanf(%d,&i); if(i=0) break; if(i%2=0) printf(the data %d is a even number.n,i); else printf(the data %d is a odd number.n,i); 2.6#include main() int i; int a=8,b=1; int sum=0; for(i=0;i10;i+) b+=3; sum += a; a+=b; printf(a%8d b:%8dn,a,b); printf

5、(The Sum Of Is:%dn,sum);2.7#include main() float x,y; printf(please input x:); scanf(%f,&x); if(x1.0) y=x; else if(x10) y=2*x-1; else y=3*x-11; printf(y=%fn,y);2.8#include main() long a,i,b,a1; while(1) printf(please input data(1-99999):); scanf(%ld,&a); printf(a:%ldn,a); if(a=100000) break; i=0; a1

6、=0; while(a!=0) b=a%10; printf(%8d,b); a/=10; i+; a1=a1*10+b; printf(n i:%ld a1:%ldn,i,a1); 2.9#include #include #include main() int a,b,i,k=0; randomize(); a=random(1001);/*create a random data(0-1000)*/ for(i=0;ib) k+; printf(n%d:Smaller,guess again!n,k); else if(ab) k+; printf(n%d:Bigger,guess ag

7、ain!n,k); else printf(nYou guess right,congraturation!) ; printf(nYou have guessed %d times,k); break; if(k=20) printf(nsorry,you failed!);2.10#include main() int a,b,c; int num; for(a=0;a10;a+) for(b=0;b10;b+) for(c=1;c10;c+) num=a*100+b*10+c; if(num%3=0)&(a=5|b=5|c=5) printf(%8d,num); printf(nnn);

8、2.11#include main() int i; int a,b; printf(please input a,b:); scanf(%d%d,&a,&b); for(i=a0;i-) if(a%i=0&b%i=0) printf(The max=%d,i); break; for(i=ab?a:b;i0;i+) if(i%a=0&i%b=0) printf(nThe min=%d,i); break; 2.12#include main() int a,k=0; printf(please input data:); scanf(%d,&a); while(a%2=0) a=a/2; k

9、+; printf(nthe number of factor(2) is %d,k);2.13main() long i,t=1; long sum=0; for(i=1;i=10;i+) t*=i; sum+=t; printf(%ld!=%ldn,i,t); printf(sum:%ldn,sum); 2.14#include void main() int i,x=0; for(i=9;i=1;i-) x=2*(x+1); printf(The first day:%d,x);2.15#include #define PI 3.141593main() float r,h; float

10、 v; printf(please input r,h:); scanf(%f%f,&r,&h); v=1.0/3*PI*r*r*h; printf(V=%.2f,v);2.16#include#includemain() long int sn=0; long int m=0,t=0; int a,n,i; printf(please input a n:); scanf(%d%d,&a,&n); for(i=0;in;i+) m=m*10+a; sn+=m; printf(a+aa+aaa+.+aa.a=%ldnn,sn);2.17#include main() int k; printf

11、(please input k:); do scanf(%d,&k); if(k=0&k=6) break; while(1); switch(k) case 0:printf(Sunday.n);break; case 1:printf(Monday.n);break; case 2:printf(Tuesday.n);break; case 3:printf(Wednesday.n);break; case 4:printf(Thursday.n);break; case 5:printf(Friday.n);break; case 6:printf(Saturday.n);break;

12、2.18#include main() int i; double x,a,b=1,sum=1; printf(please input x:); scanf(%lf,&x); a=x; for(i=1;a/b=1e-6;i+) sum=sum+a/b; a=a*x; b=(i+1)*b; printf(nsum=%lf,sum);2.19#include #include main() float a,x1,x2; printf(input a:); scanf(%f,&a); x1=1.0; while(1) x2=1.0/2*(x1+a/x1); if(fabs(x2-x1)1e-5)

13、break; x1=x2; printf(sqrt(a)=%f,x2);第四章写出下列程序输出结果1.no 1 a=1no 1 a=0no 1 a=1no 1 a=02.a=0 b=0 c=0a=1 b=0 c=0a=2 b=0 c=03.main:x=5,y=1,n=1func:x=6,y=21,n=11main:x=5,y=1,n=11func:x=8,y=31,n=21第五章1.D 2.D 3.C 4.6 5.CDABC6.(1)j+=2 (2)ai=0&si=912. (1)0 (2)str1i-str2i5.1#includeint fun();int fun() int a33,s

14、um; int i,j; sum=0;/*error*/ for(i=0;i3;i+) for(j=0;j3;j+) scanf(%d,&aij);/*error*/ for(i=0;i3;i+) sum=sum+aii; printf(sum=%dn,sum);void main() fun();5.2#include void main( void ) float Num10; float Input,GetNum11; int i,j; float a=6;for(i=0; i10; i+) Numi=a; a=a+7.5;Loop1: printf(Please input a Num

15、ber(0-80) Input=); scanf(%f,&Input);if(Input70)=1)goto Loop1;for(i=0; i10; i+ ) if(InputNumi) goto Loop2;Loop2: for(j=0; ji; j+ ) GetNumj=Numj;GetNumj=Input;for(j=i; j=10; j+,i+)GetNumj+1=Numi;for(j=0; j11; j+ )printf(%3.3f ,GetNumj);5.3#include stdio.h#include stdlib.hmain() int a1,a2,a3,a4,a5,a6,a

16、7,a8,a9; int a3; int i; for(;) for (i=0;i3;i+) ai=rand()%3; while(a0!=a1) & (a0!=a2) & (a1!=a2)/*get three different numbers 0,1,2*/ a1=a0+1;/*divide 19 into three groups,a1a3,a4a6,a7a9*/ a2=a1+1; a3=a2+1; a4=a1+3; a5=a2+3; a6=a3+3; a7=a1+6; a8=a2+6; a9=a3+6; /* make sure that each line and each row

17、 is made up with three members in different group.*/ /* such as: a9 a1 a5 a2 a6 a7 a4 a8 a3 */ if(a1+a5+a9) = (a2+a6+a7) & (a1+a5+a9) = (a3+a4+a8) & (a1+a6+a8) = (a5+a7+a3) & (a1+a5+a9) = (a2+a4+a9) printf(%d %d %dn%d %d %dn%d %d %dn,a9,a1,a5,a2,a6,a7,a4,a8,a3); return; 5.4#include void main(void) c

18、har input1100,input2100,input3100; int i,Eng=0,eng=0,num=0,blank=0,other=0; printf(Input 3 rows of character,each row dont exceed 80 characters:n); gets(input1); printf(The second row:n); gets(input2); printf(The third row:n); gets(input3);/*test the first row*/ for(i=0; i100; i+) if(input1i=0) goto

19、 Loop1; else if(A=input1i)&(input1i=Z)=1) Eng+; else if(a=input1i)&(input1i=z)=1) eng+; else if(0=input1i)&(input1i=9)=1) num+; else if(input1i=32) blank+; else other+; /*test the second row*/Loop1: for(i=0; i100; i+) if(input2i=0) goto Loop2; else if(A=input2i)&(input2i=Z)=1) Eng+; else if(a=input2

20、i)&(input2i=z)=1) eng+; else if(0=input2i)&(input2i=9)=1) num+; else if(input2i=32) blank+; else other+; /*test the third row*/Loop2: for(i=0; i100; i+) if(input3i=0) goto Loop3; else if(A=input3i)&(input3i=Z)=1) Eng+; else if(a=input3i)&(input3i=z)=1) eng+; else if(0=input3i)&(input3i=9)=1) num+; e

21、lse if(input3i=32) blank+; else other+; Loop3: printf(Upper english character:%dnLower english character:%dnNumber:%dnBlank:%dnOther characters:%dn,Eng,eng,num,blank,other);5.5#include void main(void) char str180,str240; int i,j,k;/*Input two string*/ printf(Please input the first stringn str1=); ge

22、ts(str1); printf(Please input the second stringn str2=); gets(str2);/*Get the end of str1*/ for(i=0; i80; i+) if(str1i=0) break; /*Copy str2 to str1*/ for(j=i,k=0; str2k!=0;k+,j+) str1j=str2k; str1i+k=0; puts(str1);5.6#include struct student char name20; int score;stu5,stu1;void main(void) int i,j;

23、printf(Input students score and name(5),seperate using the character of , :n); for(i=0; i5; i+) scanf(%d,%s,&stui.score,&stui.name);/*sorting*/ for(i=0; i5; i+) for(j=0; jstuj+1.score) stu1=stuj;stuj=stuj+1;stuj+1=stu1; printf(After sotred,score and name:n); for(i=0; i5; i+) printf(%d,%sn,stui.score

24、,stui.name);5.7#includemain() int a33,i,j,m,n,o,p; printf(Please input a 3*3 shuzu:n); for (i=0;i=2;i+) for (j=0;j=2;j+) scanf(%d,&aij); for (i=0;iai1)? ai0:ai1; n=(mai2)? m: ai2; for (j=0;j=2;j+) o=(a0ja1j)? a0j:a1j; p=(oa2j)? o: a2j; if (n=p) printf(Andian is %dn,p); else printf(There is no andian.n);5.8#include void main(void) int a43,b34,i,j;