n!

[whxu (ㄧㄟㄛ夫～好淫穢)]

直接用 int 來存只能正常算到 12! 而已 ~


#include <iostream>
using namespace std;
int main(void)
{
        int n,sum;
        while(sum=1) {
                cout << "Please input n to get n! , -1 to exit.....n = ";
                cin >> n;
                if (n == -1) break;
                cout << n <<"! = ";
                while(n-- , n>0) sum=sum*(n+1);
                cout << sum << "\n";
        }
        return 0;
}

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◆ From: 140.112.18.117
※ 編輯: whxu            來自: 140.112.18.117       (10/02 15:59)