using System;

​

​

public interface IAnimal

{

    string MakeSound();

}

​

​

public interface ISuperAnimal : IAnimal

{

    string ManifestSuperPower();

}

​

​

​

public class SuperDog : ISuperAnimal, IAnimal

{

    public string MakeSound()

    {

        return "Haf Haf";

    }

​

    public string ManifestSuperPower()

    {

        return "pooping gold...";

    }

}

​

​

public class SuperCat : ISuperAnimal, IAnimal

{

    string IAnimal.MakeSound()

    {

        return "IAnimal.MakeSound() Meow";

    }

​

    public string MakeSound()

    {

        return "SuperCat.MakeSound() meow";

    }

​

​

    public string ManifestSuperPower()

    {

        return "farthing rainbow..";

    }

}

​

​

public class Program

{

    public static void Main()

    {

        SuperDog dog = new SuperDog();

        ISuperAnimal superDog = dog;

        IAnimal dogAnimal = dog;

​

        Console.WriteLine("dog.MakeSound(): " + dog.MakeSound());

        Console.WriteLine("superDog.MakeSound(): " + superDog.MakeSound());

        Console.WriteLine("dogAnimal.MakeSound(): " + dogAnimal.MakeSound());

​

​

        SuperCat cat = new SuperCat();

        ISuperAnimal superCatAnimal = cat;

        IAnimal catAnimal = cat;

​

        Console.WriteLine("cat.MakeSound(): " + cat.MakeSound());

        Console.WriteLine("superCatAnimal.MakeSound(): " + superCatAnimal.MakeSound());

        Console.WriteLine("animal.MakeSound(): " + catAnimal.MakeSound());

        Console.ReadLine();

   }

}