[交流] 阶乘求法。

2楼: Originally posted by moverzp at 2016-05-20 17:19:45
//求n的阶乘
int Factorial(int n)
{
if (n<=0) return 0;

int res = 1;
for(int i=1; i<=n; i++)
    res *= i;
return res;
}

1楼: Originally posted by 赛赛呆 at 2016-05-20 09:18:32
c++怎么写1！+...+4！+5！