用数组模拟高精度

#include<cstring>//memset(s, 0, sizeof(s))
#include<iostream>
using namespace std;
int c[100000];
int main()
{
	int n;
	while (cin >> n)
	{
		memset(c, 0, sizeof(c));
		int w = 1;//记录位数
		c[1] = 1;
		for (int i = 2; i <= n; i++)
		{
			for (int j = 1; j <= w; j++)
				c[j] *= i;
			for (int j = 1; j <= w; j++)
			{
				if (c[j] > 9)
				{
					c[j + 1] += c[j] / 10;
					c[j] %= 10;
					if (j == w)
						w++;
				}
			}
		}
		for (int i = w; i >= 1; i--)
			cout << c[i];
		cout << endl;
	}
	return 0;
}