题解 | #素数#
素数
https://www.nowcoder.com/practice/7f4be54b37a04fdaa4ee545819151114
#include <iostream>
using namespace std;
#include<math.h>
int main(){
int n;
while(cin >>n){
int j;
for (int i = 11;i<n;i++){ //个位为1的素数，最小是11
for (j = 2;j<=sqrt(double(i));j++){ //判断素数
if (i%j==0) break;
}
//输出
if (j>sqrt(double(i)) && i%10 ==1) cout << i<<" ";
}
}
}
