using System;

public class Program

{

    public static void Main (string[] args)

    {

        Numbers mynum = new Numbers();

        mynum.a = 40;

        mynum.b = 40;

        mynum.Add() ;

    }

     class Numbers

    {

        internal int a;

        internal int b;

        internal int result;

         internal  void Add()

        {

            result= a+b;

            Console.WriteLine(result);

            Console.ReadLine();     

        }

     }

}