C语言程序设计江宝钏著清华大学出版社第6章参考(9)

{int n,s=0;

n=m;

while(m!= 0){

s = s*10+m%10;

m/=10;

}

return s;

}

int prime(int m)

{ int k,n;

if(m == 1) return 0;

n = (int)sqrt(m);

for(k = 2; k <= n; k++) if(m%k == 0) return 0; return 1;} void main() {

int n,m,i,k=1;

for(i=100;i<=1000;i++) if(prime(i)&&prime(rev(i)))

if(k<=10){printf("%6d",i);k++;} else {k=1;printf("\n");}

}__