using System;

using System.Collections.Generic;

using  CSharp_fundamental.SOLID.LSP;

public class Program

{

​

    public static void Main()

    {

        Console.WriteLine("Hello World");

        ViolatedLSP.PrintArea();

    }

}

​

​

namespace CSharp_fundamental.SOLID.LSP

{

    public static class ViolatedLSP

    {

        public static void PrintArea()

        {

            var retangles = new List<Retangle>()

            {

                new Retangle() { Width=5,Height=10 },

                new Square() {Width=5,Height=4 }

            };

            foreach (var retangle in retangles) {

               var area= retangle.Area();

                Console.WriteLine(retangle.GetType().ToString() + area);

            }

            Console.ReadLine();

        }

    }

​

    public class Retangle

    {

        public virtual int Width { get; set; }

        public virtual int Height { get; set; }

        public virtual float  Area()

        {

            return this.Width * this.Height;

        }

    }

​

    public class Square:Retangle

    {

        private int _width;

        private int _height;

        public override int Width { get { return _width; } set { _width = value; _height = _width; } }

        public override int Height { get { return _height; } set {  _height = value; _width =_height; } }

        public override float Area()

        {

            return this.Width * this.Height;

        }

    }

}