using System;

​

class Math

{

    public int num1;

    private int num2; // private = hide from user

    //properties

    public int Num2

    {

        get {return num2;} //get properties = get the value for num2

        set {num2 = value;} //set properties = set the value for num2

        //shortcut

        /*  get;

            set;  */ 

    }

}

public class Program

{

    public static void Main()

    {

        Math group1 = new Math();

        group1.num1 = 3;

        group1.Num2 = 4;

        Console.WriteLine(group1.num1 + group1.Num2);

    }

}