using System;

abstract class Parent

{

    public int x = 20;

    public abstract void kfc();

    public void dosa()

    {

        Console.WriteLine("crispy");

    }

}

class Child : Parent

{

    public void idli()

    {

      Console.WriteLine("smooth");

    }

    public override void kfc()

    {

       Console.WriteLine("yummy");

    }

}

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        Child c = new Child();

        c.dosa();

        c.idli();

        c.kfc();

    }

}