题解 | #判断一个数是不是质数#

#include <iostream>
using namespace std;

int main() {

    // write your code here......
    int _int;
    cin >> _int;
    int _div = 1;
    while (++_div < _int) {
        if (_int % _div == 0) {
            cout << "不是质数";
            return 0;
        }
    }
    cout << "是质数" << endl;
    return 0;
}