题解 | 判断一个数是不是质数
判断一个数是不是质数
https://www.nowcoder.com/practice/b8bb5e7703da4a83ac7754c0f3d45a82
#include <iostream>
using namespace std;
int main() {
int num = 0;
volatile bool flag = false;
cin >> num;
for (int i = 2; i <= num; i ++) {
if (num == i) {
cout << "是质数"<<endl;
break;
} else if (num % i == 0) {
cout << "不是质数"<<endl;
break;
}
}
return 0;
}
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