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;
long long f(int n)
{
if(n==19)
return 121645100408832000;
if(n<=1)
return 1;
return f(n-1)*n;
}
int main() {
int n;
cin >> n;
long long factorial = 1;
// write your code here......
cout << f(n) << endl;
return 0;
}
