using System;

struct Books

{

  private string naam_book;

  private int    id_book;

    public void getValues(string t, int id) 

    { naam_book  = t;    

      id_book    = id;

      Console.WriteLine(naam_book);

      Console.WriteLine(id_book);

    }

​

    public void Display()

    {

        Console.WriteLine(naam_book);

        Console.WriteLine(id_book);

    }

}

​

public class Program

{ enum days {maandag, dinsdag, woensdag, donderdag, vrijdag, zaterdag, zondag};

   public static void Main()

    { 

        Books book1 = new Books();

        string naam_book1 = "lala boya ";

        int id_book1      = 11111;

      //  Books book2 = new Books();

    //    book1.naam_book1 = "verhalen 1000 nachten";

    //    book1.id_book1   = 1000;

          book1.getValues(naam_book1,id_book1);       

          book1.Display();

         Console.WriteLine("Eerste dag van de week: {0}" , (int)days.vrijdag);

    }

}