using System;

public class Program

{

    //INTERVIEW QUESTION

    public static void Main()

    {

        //PART 1

        int z = 1;

        int y = 3;

        int x = DoWorK(z, y);

        Console.WriteLine(string.Format("{0}, {1}, {2}", z, y , x));

        //PART 2

        x = DoWorK2(ref z, ref y);

        Console.WriteLine(string.Format("{0}, {1}, {2}", z, y , x));

        Console.WriteLine("test");

    }

    public static int DoWorK(int z, int y)

    {

        z++;

        y--;

        return z + y;

    }

    public static int DoWorK2(ref int z, ref int y)

    {

        z++;

        y--;

        return z + y;

    }

}