C语言之递归求阶乘

#include<stdio.h>/*运用递归，求一个数的阶乘，例如用户输入5，则就是5的阶乘：5*4*3*2*1=120*///5*4*3*2*1=120//5*factorial(4)---5*4*factorial(3)--int factorial(int a) {if (a == 1){return 1;}return a*factorial(a-1);}int main() {int result = factorial(5);printf("result:%d\n",result);return 0;}