#include <stdio.h>
int main(void)
{
    int   i, n;
    long p = 1;        
    printf("Please enter n:");
    scanf("%d", &n);
    for (i=1; i<=n; i++)
    {
     p = p * i;                       
    printf("%d! = %ld\n", n, p);     /* 以长整型格式输出n的阶乘值 */
    }
    return 0;
}