using System;

namespace InheritanceDemo

{

    public class A

    {

        public int x = 5;

    }

    public class B: A

    {

        public int y = 20;

        public int getSum()

        {

            return x + y;

        }

    }

   public class Test

   {

     public static void Main(string[] args)

     {

         B obj = new B();

        Console.WriteLine("Sum = {0}", obj.getSum());

     }

   }

}