题解 | #阶乘计算#
阶乘计算
https://ac.nowcoder.com/acm/problem/22205
#include<bits/stdc++.h> using namespace std; int main() { int sum=1; int sum2=0; int n;cin>>n; for(int i=1;i<=n;i++) { sum=sum*i; sum2=sum2+sum; } cout<<sum2;``` js
using namespace std;
int main()
{
int sum=1;
int sum2=0;
int n;cin>>n;
for(int i=1;i<=n;i++)
{
sum=sum*i;
sum2=sum2+sum;
}
cout<<sum2;
}
