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;
bool isPrime(int num) {
int i;
bool flag = true;
for (i = 2; i < num; i++) {
if (num % i == 0) {
flag = false;
}
}
return flag;
}
int main() {
// write your code here......
int n;
cin >> n;
if (isPrime(n)) {
cout << "是质数" << endl;
} else {
cout << "不是质数" << endl;
}
return 0;
}
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