using System;

using System.Collections.Generic;

​

namespace Lection10_04

{

    class Point2d

    {

        int x;

        public int X

        { 

        get

        {

            return x;

        }

        }

        int y;

        public int Y

        {

            get

            {

                return y;

            }

        }

        public Point2d()

        {

            x = 1;

            y = 1;

        }

        public Point2d(int x, int y)

        {

            this.x = x;

            this.y = y;

        }

​

        public void Print()

        {

            Console.WriteLine("x: {0}\ny: {1}", x, y);

        }

    }

​

    class Point3d : Point2d

    {

        int z;

        public Point3d() : base()

        {

            z = 1;

        }

        public Point3d(int x, int  y, int z) : base (x, y)

        {

            this.z = z;

        }

        public override bool Equals(object obj)

        {

            Point3d point = (Point3d)obj;

            if (this.X != point.X || this.Y != point.Y || this.z != point.z)

            {

                return false;

            }

            else

            {

                return true;

            }

        }

​

        public new void Print()

        {

            base.Print();

            Console.WriteLine("z: {0}", z);

        }

​

    }

    public class Program

    {

        public static void Main(string[] args)

        {

            Point2d point2D = new Point2d();

            Point3d point3D = new Point3d(4, 5, 1);

            Point3d point3DS = new Point3d(2, 2, 8);

            Point3d notoriginal = new Point3d();

            double[] numbers = {7.3, 1.5, 113 };

            string[] symbols = { "zxc", "zxcv", "zxcvbnm" };

            Print<double>(numbers);

            Print<string>(symbols);

            if (point2D is Point2d)

            {

                Console.WriteLine("Совместимы");

            }

            Console.WriteLine(point2D as Point2d);

            List<Point3d> points = new List<Point3d>();

            points.Add(point3D);

            points.Add(point3DS);

            points.Add(notoriginal);

            Console.WriteLine("Старый массив:");

            foreach (var item in points)

            {

                item.Print();

            }

            points.Remove(notoriginal);

            points.Insert(1, notoriginal);

            Console.WriteLine("Новый массив:");

            foreach (var item in points)

            {

                item.Print();

            }

            Dictionary<string, string> users = new Dictionary<string, string>();

            users.Add("Admin", "12345678");

            users.Add("Polzovat", "1234");

            foreach (var key in users)

            {

                Console.WriteLine(key);

            }

        }

​

        static void Print<T>(T[] arr)

        {

            foreach (var item in arr)

            {

                Console.WriteLine(item);

            }

        }

    }

}