using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

​

namespace Plugin

{

    // Modify the code to allow a single collection containing both circles & squares.

    // There must be only one loop to generate the output from the Draw method.

    public class Program

    {

        public static void Main(string[] args)

        {

            List<IGeo> geos = new List<IGeo>();

            geos.Add(new Circle { X = 1, Y = 2, Radius = 3 });

            geos.Add(new Circle { X = 2, Y = 15, Radius = 1 });

​

            geos.Add(new Square { X = 3, Y = 7, Length = 15 });

            geos.Add(new Square { X = 3, Y = 10, Length = 23 });

            geos.Add(new Square { X = 7, Y = 0, Length = 2 });

​

            foreach (var c in geos)

                c.Draw();

​

            Console.ReadLine();

        }

    }

    public interface IGeo

    {       

        int X { get; set; }

        int Y { get; set; }

        void Draw();

    }

​

    public class Circle : IGeo

    {

        public int X { get; set; }

        public int Y { get; set; }

        public int Radius { get; set; }

​

        public void Draw()

        {

            Console.WriteLine(String.Format("Circle: {0} {1} {2}", X, Y, Radius));

        }

    }

​

    public class Square : IGeo

    {

        public int X { get; set; }

        public int Y { get; set; }

        public int Length { get; set; }

​

        public void Draw()

        {

            Console.WriteLine(String.Format("Square: {0} {1} {2}", X, Y, Length));

        }

    }

}