WAP to Find Factorial of a Number using Recursion.

#include<stdio.h>

#include<math.h>

int main()

{

    int a,b;

    printf("Enter the number = ");

    scanf("%d",&a);

    b=factorial(a);

    printf("facatorial of %d is %d ",a,b);

}

int factorial(int a)

{

    if(a==1 || a==0)

    {

        return 1;

    }

    else

    return  a*factorial(a-1);

}