c语言考试试题(3)

3.

main()

{ int i,a=0;

for(i=1;i<=5;i++)

switch(i)

{ case 1:a+=1;

case 2:a+=2;break; case 3:a+=3; default:a+=4; }

printf(\}

运行结果:

#include main()

{ int a=12,b=5;

int *p1=&a,*p2=&b,*t;

printf(\t=p1; p1=p2; p2=t;

printf(\printf(\}

运行结果:

2. main()

{ int x=1 , y=5 , z=0;

while(x

x=x+3 ; y++; z++; }

printf(\

}

1．执行下列程序，输入3，写出运行结果。

#include ”stdio.h” main() {

int k;

scanf(”%d”, &k); switch(k) {

case 1: printf(”%d\\n”, k++); case 2: printf(”%d\\n”, k++);

case 3: printf(”%d\\n”, k++); case 4: printf(”%d\\n”, k++);

break;

default: printf(”Full!\\n”);

} }

2．以下程序运行的结果

#include main()

{ int a,b;

for(a=1,b=1;a<=100;a++) {

printf(\if(b>=20) break; if(b%3==1) {

b+=3; continue; } b-=5; }

printf(\}

3．写出下面程序运行结果

#include main() {

static int a[][3]={9,7,5,3,1,2,4,6,8}; int i,j,s1=0,s2=0; for(i=0;i<3;i++) for(j=0;j<3;j++) {

if(i==j)

s1=s1+a[i][j]; if(i+j==2)

s2=s2+a[i][j]; }

printf(\}

4．写出下面程序运行结果

#include main() {

int i;

for(i=1;i<=5;i++) {

if(i%2)

printf(\ else

continue; printf(\ }

printf(\ }

3. main() { int a[3][3],i,j; for(i=0;i<3;i++)

{ for(j=0;j<3;j++)

{ }

printf(\

a[i][j]=i+j;

printf(\

}

} 1． main()

{

int a=2,b= -1,c=2; if (a

printf(”%d\\n”,c); }

2． main()

{ int n;

for(n=1;n<=10;n++) { if(n%3==0)

continue; printf(\} }

3．main()

{

int a[]={1,2,3,4},i,j,s=0;

j=1;

for(i=3;i>=0;i--) {

s=s+a[i]*j;

j=j*10; }

printf(\

}

1. #include

main()

{ int s=0,i;

i=1;

while (i<=10) { if (i%4==0)

{ i++; continue;}

s=s+i;

i++; }

printf(\}

2. #include

main()

{ int i,a=0;

for(i=1;i<=5;i++) switch(i)

{ case 1:a+=1; case 2:a+=2;break; case 3:a+=3; default:a+=4; }

printf(\}

3. #include

main()

{ int a=12,b=5,t;

int *p1=&a,*p2=&b;

printf(\t=*p1; *p1=*p2; *p2=t;

printf(\printf(\}

4． #include

main() { int i;

for(i=1;i<=5;i++) {

if(i%2)

printf(\ else

continue; printf(\ }

printf(\}

5. main() { int x=3; if(x>2)

x=x-3; if (x<1)

x=5; else

x=8;

printf(\

}

1. #include

main()

{ int s=0,i;

i=1;

while (i<=10) { if (i%3==0) s=s+i; i++; }

printf(\}

2. #include

main()

{ int i,a=0;

for(i=1;i<=5;i++) switch(i)

{ case 1:a+=1;

case 2:a+=2;break; case 3:a+=3;