题解 | #计算一个数的阶乘#
计算一个数的阶乘
https://www.nowcoder.com/practice/b0423a89826c4d68a3e8b9832a6a1f49
#include <iostream>
using namespace std;
int main() {
int n;
cin >> n;
long long factorial = 1;
while (n >= 1) {
factorial *= n--;
}
cout << factorial << endl;
return 0;
}