using System;

public class Animal

{

    public string name;

    private double weight;

    public void EatFood()

    {

        Console.WriteLine("Animal eating... "+ name);

    }

    public void Breed()

    {

        Console.WriteLine("Breeding... " + name);

    }

}

​

public class Cow : Animal

{

    public Cow(string a)

    {

        this.name = a;

    }

    public void Moo()

    {

        Console.WriteLine("Moo...");

    }

    public void SupplyMilk()

    {

        Console.WriteLine("Drink milk...");

    }

    public void EatFood()

    {

        Console.WriteLine("Eating..." + name);

    }

    public void Breed()

    {

        Console.WriteLine("Breed is..." + name);

    }

    public static void Main()

    {

        Animal obj1 = new Animal();

        obj1.EatFood();

        obj1.Breed();

        Animal obj2 = new Cow("CCC");

        obj2.EatFood();

        obj2.Breed();

    }

}