C语言必考100题(4)

}

} 23.

#include #include int isprime(int n) { } { }

int m;

for(m=2;m<=sqrt(n);++m) { }

if(n%m==0)

return 0;

printf(\

int main()

int n,m,i,t;

printf(\请输入数字范围：\scanf(\if(n

n=m; m=t;

for(i=m;i<=n;i++) { }

isprime(i);

24.

#include main() {

int year,month;

printf(\

}

scanf(\switch(month) {

case 1: case 3: case 5: case 7: case 8: case 10: case 12:

printf(\break;

case 2: if((year%4==0&&year0!=0)||(year@0==0))

{ } else { }

printf(\printf(\

break; case 4: case 6: case 9: case 11:

printf(\ break; default: printf(\}

25.

#include

main() {

int x,i,j,k;

for(x=100;x<1000;x++) {

i=x/100;

j=(x-100*i)/10;

}

}

k=x;

if(x==i*i*i+j*j*j+k*k*k) { printf(\}

26.

#include

main() { }

27.

#include

main() {

int i,j,k,count=0; for(i=1;i<=28;i++) { for(j=1;j<=73;j++) }

{ }

k=100-i-j;

if(5*i+2*j+k==150) {

count++; }

printf(\

int i,j;

for(i=1;i<=98;i++) { }

for(j=1;j<=98;j++) { }

if(i+j==98&&2*i+4*j==386) { }

printf(\

printf(\

} 28.

#include main() { }

29.

#include #include main() {

int m,n,i;

for(m=0;m<10;m++) { printf(\}

printf(\for(n=0;n<10;n++) {

printf(\ for(m=0;m<10;m++) {

}

printf(\

int i,j,k,count=0;

for(i=0;i>=0&&i<=3;i++) {

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

for(k=0;k>=0&&k<=6;k++) { }

if(i+j+k==8) { }

count++;

printf(\

} }

printf(\

printf(\ } } 30.

#include main() { } 31.

#include int zd(int x,int y) {

int t; if(x

while(y) {

t=x%y; x=y; y=t; } return x; } int main() {

int i,j,k;

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

for(j=3;j<=8-i;j++) {

printf(\

}

for(k=1;k<=(2*i-1);k++) { }

printf(\

printf(\