using System;

public class Program

{

    public static void Main()

    {

    music metal = new music();

    music rock = new music();

    music alternative = new music();

    music classic = new music();    

    music jazz = new music();   

    Console.WriteLine(metal.year );

     jazz.year = 1920;

    rock.year = 1979;

    Console.WriteLine(rock.year );

    Console.WriteLine(jazz.year );

    }

    public class music

    {

    public int year = 1990 ;

    }

}

​

    /*public static void Main()

    {

        Car Audi = new Car();

        Car Opel = new Car();

            Car Shevrolet = new Car();

        Console.WriteLine( Shevrolet.color);

        Console.WriteLine( Opel.year);

        Audi.color = " grey";

        Console.WriteLine( Audi.color);

        Audi.Sound();   

    }

    public class Car   

    {

        public string color = " yellow ";

        public int year =  2007;

         public void Sound(){

Console.WriteLine(" biiiiiiiiiib");

         }*/

​

​

​

​