[c] 팩토리얼.. - 재귀함수

#include<stdio.h>

int factorial(int num){

    if(num==1){

        return 1;

    }else{

        num*=factorial(num-1);

        return num;

    }

}

void main(){

    int num,result;

    printf("Enter a number : ");

    scanf("%d",&num);

    result=factorial(num);

    printf("n%d's factorial is %d !!n", num, result);

}