using System;

public class Program

{

    public string congrats {get;set;}

    public void whew()

    {

        Program me = new Program();{    

        me.congrats = ("Congratulations");

        Console.WriteLine(me.congrats);

        }

    }

    public static void Main(string[] args)

    {

        do

        {

            Console.Write("x = ");

            string str = Console.ReadLine();

            if (str == "exit")

            {

                Console.WriteLine("Program has stopped");

                break;

            }

            else

            {

                int x = Convert.ToInt32(str);

                Console.Write("y = ");

                int y = Convert.ToInt32(Console.ReadLine());

                int sum = x + y;

                Console.WriteLine("Result: {0}", sum);

            }

        }

    while (true);

}

}

public class wew

{

    public void whew()

    {

        Program me = new Program();{    

        me.congrats = ("Congratulations! Another problem?");

        }

        Console.WriteLine(me.congrats);

    }

}