C Exercise Example 26
100 cases of classic C language
Title: recursive method request 5 !.
Program analysis: recursive formula: fn = fn_1 * 4!
Source Code:
// Created by www.w3big.com on 15/11/9.
// Copyright © 2015年 本教程. All rights reserved.
//
#include <stdio.h>
int main()
{
int i;
int fact();
for(i=0;i<6;i++){
printf("%d!=%d\n",i,fact(i));
}
}
int fact(int j)
{
int sum;
if(j==0){
sum=1;
} else {
sum=j*fact(j-1);
}
return sum;
}
The above example output is:
0!=1 1!=1 2!=2 3!=6 4!=24 5!=120