C语言 阶乘递归

下面是源代码：#include "stdafx.h"#include<stdio.h>unsigned int factorial(unsigned int a);int _tmain(int argc, _TCHAR* argv[]){unsigned int f,x;puts("Enter an interger value between 1 and 8:/n");scanf("%d",&x);if(x>8||x<1){printf("Error!/n");}else{f=factorial(x);printf("%u factorial equals %u/n",x,f);}getchar();return 0;}unsigned int factorial(unsigned int a){if(a==1)return 1;else{a*=factorial(a-1);return a;}}