Factorial Using Recurssion

#include <iostream>
using namespace std;
int factorial(int num)
{
    int result = 1;
    if(num != 1)
    {
        result = num*factorial(num-1);
    }
        return result;
}

int main ()
{
    int num;
    cout << "Input Value for Factorial: ";
    cin >> num;
    if(num == 0)
    {
        cout << "Factorial Value is: 1";
    }
    else
    {
        cout << "Factorial Value is: " << factorial(num) <<endl;
    }

    return 0;
}