C++ 求阶乘

#include<iostream>
using namespace std;
const int size = ; //输入阶乘数
int main()
{
    long long factorial[size];
    factorial[] = factorial[] = 1LL;
    for (int i = ; i < size; i++)
    {
        factorial[i] = i * factorial[i - ];
    }
    for (int i = ; i < size; i++)
        cout << i << "! = " << factorial[i] << endl;
    cin.get();
    return ;
}

输出：

! =
! =
! =
! =
! =
! =