#include<stdio.h> #include<stdlib.h> //题目:用递归法求n的阶乘 int main(){ int n; long int s,a; while(1){ printf("请输入参数n:"); scanf("%d",&n); s=1; for(a=1;a<=n;a++) s=s*a; printf("%d!=%ld ________________________________ ",n,s); } return 0; }