一千以内的素数

#include<iostream>#include<cmath>using namespace std;int main(){int i,j,c=1;;bool prime;cout<<"一千以内的素数为："<<endl;    cout<<2;for(i=3;i<=1000;i++){prime=true;for(j=2;j<=sqrt(i);j++)if(i%j==0){prime=false;break;}if(prime){c++;if(c%10!=0)cout<<'\t'<<i;else cout<<endl<<i;}}cout<<endl;return 0;}