using System;

public class Program

{

    public static void Main()

    {

        /*shape[] s= new shape[3];

        s[0]= new Rectangle();

        s[1]= new Circle();

        s[2]=new square();

        for (int i=0;i<s.Length;i++){

            s[i].Draw();

            */

        shape square= new square();

        square.Draw();

        shape Rectangle= new Rectangle();

        Rectangle.Draw();

        shape Circle= new Circle();

        Circle.Draw();

        }

    }

    public class shape

    {

        public virtual void Draw(){

        }

    }

    public class Rectangle:shape

    {

        public override void Draw()

        {

                Console.WriteLine("Draw the rectangle");

        }

    }

    public class Circle:shape

    {

        public override void Draw()

        {

                Console.WriteLine("Draw the Circle");

        }

    }

    public class square:shape

    {

        public override void Draw()

        {

                Console.WriteLine("Draw the Square");

        }

    }

​