using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

namespace ConsoleApplication2

{

    interface IAnmimal

    {

        string Name

        {

            get;

        }

    }

​

    class Animal

    {

        public virtual string Name

        {

            get

            {

                return "Animal";

            }

        }

    }

​

    class Dog : Animal

    {

        public override string Name

        {

            get

            {

                return "Dog";

            }

        }

    }

​

    public class Program

    {

        public static void Main(string[] args)

        {

            Animal myAnimal = new Animal();

            Console.WriteLine(myAnimal.Name);

            Animal myDog = new Dog();

            Console.WriteLine(myDog.Name);

        //IAnmimal myDog2 = new Dog();

        //Console.WriteLine(myDog2.Name);

        }

    }

}