Factorial using Recursion

#include <stdio.h>

long factorial (int n)
{
    if(n == 0)
        return 1;
    else
        return (n * factorial(n-1));
}

int main ()
{
    int n;
    long f;

    printf("Enter the integer to find Factorial : ");
    scanf("%d", &n);

    f = factorial(n);
    printf("%d! = %ld",n,f);
    return 0;
}