Factorial of a number using Recursion

Hopefully this code will help you to understand Recursion well.

#include<stdio.h>

#include<conio.h>

long int factorial(long int x)

{

if(x<=0)

return 1;

else

return x*factorial(x-1);

}

void main()

{

long int n,y;

clrscr();

scanf("%ld",&n);

y=factorial(n);

printf("the factorial is:%ld",y);

getch();

}