using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        baseclass b = new derivedclass();

         b.func1 ();                

         b.func2 ();                

         b.func3 ();

    }

}

​

class baseclass

{

     public void func1() {

        Console.WriteLine("baseclass - Fun1");

     }

     public virtual void func2() {

        Console.WriteLine("baseclass - Fun2");

     }

     public virtual  void func3() {

        Console.WriteLine("baseclass - Fun3");

     }

}

class derivedclass :baseclass

{

     new public void func1() {

        Console.WriteLine("derivedclass - Fun1");

     }

     public override void func2() {

        Console.WriteLine("derivedclass - Fun2");

     }

     public new void func3() {

        Console.WriteLine("derivedclass - Fun3");

     }

}