using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

namespace U6L1

{

    internal class Program

    {

        static void Main(string[] args)

        {

            Shape shape = new Shape("red");

            Console.WriteLine(shape.Display());

            Circle circle = new Circle("green", 5);

            Console.WriteLine(circle.Display());

            Rectangle rectangle = new Rectangle("blue", 5, 10);

            Console.WriteLine(rectangle.Display());

        }

    }

​

    internal class Shape

    {

        //default constructor

        public Shape()

        {

            Color = "";

        }

​

        //constructor

        public Shape(string color)

        {

            this.Color = color;

        }

​

        public string Color { get; set; }

​

        public string Display()

        {

            return $"Shape color is {Color}";

        }

    }

​

    internal class Rectangle : Shape

    {

        public Rectangle()

        {

            Length = 0;

            Width = 0;

        }

​

        public Rectangle(string color, int length, int width) : base(color)

        {

            Length = length;

            Width = width;

        }

​

        public int Length { get; set; }

        public int Width { get; set; }

​

        public string Display()

        {

            return $"The rectangles length is {Length} and width is {Width}";

        }

    }

​

    internal class Circle : Shape

    {

        public Circle()

        {

            Radius = 0;

        }

​

        public Circle(string color, int radius) : base(color)

        {

            Radius = radius;

        }

​

        public int Radius { get; set; }

​

        public string Display()

        {

            return $"The circle radius is {Radius}";

        }

    }

}