using System;

struct Node

{

    int data;

    //Node next; // error, Node directly depends on itself

}

​

struct A { B b; }

struct B { C c; }

struct C { int a; }

​

public class Program

{

    public static void Main()

    {

        //Console.WriteLine("Hello World");

        Bus bus0 = new Bus();

        bus0.Make = "2001";

        Bus bus1 = new Bus();

        //bus1.Equals(bus0);

        Console.WriteLine("Hello World " + bus1.Equals(bus0));

        var v = new{Type = "seater", Year = "2013"};

        Console.WriteLine($"Type is: {v.Type} and Year is: {v.Year}");

        //Bus 

        Bus[] products = {new Bus(), new Bus()};

        products[0].Color = "teal";

        products[1].Color = "teal";

        //products[2].Color = "teal";

        /*

        var productQuery =

        from prod in products

        select new { prod.Color, prod.Price };

​

        foreach (var v in productQuery)

        {

            Console.WriteLine("Color={0}, Price={1}", v.Color, v.Price);

        }*/

    }

}

​

interface IEquatable<R>{

    bool Equals(R tray);

}

​

public class Bus:IEquatable<Bus>{

​

    public string Make{get; set;}

    public string Model{get; set;}

    public string Year{get; set;}

    public string Color{get; set;}

    public string Price{get; set;}

    public bool Equals(Bus bus){

        return (this.Make, this.Model, this.Year, this.Color, this.Price) == (bus.Make, bus.Model, bus.Year, bus.Color, bus.Price);

        //return (this.Make, this.Model, this.Year) == (car.Make, car.Model, car.Year);

    }

}