using System;

public class Program

{

    class Reader

    {

    /////////////basic///////////////// 

    private string FIO;

    private int number_read_ticket; 

    private string fakultate;

    private string dizm_diena;  

    private int number;

    String gramatus,s,back_book,a;

    double reader_money=0,back_book_price,save_book_price,save_book_price2,book_cash,reader_cash;

    int book_amount,book_price, back_book_amount, after_return_book_amount,chosen_book;

    double book_1=35, book_2=20, book_3=40, book_4=25, book_5=45;////Цена книг

    //////////////////////////////////  

    /////////////Konstruktor//////////

    public Reader (string aFIO, int anumber_read_ticket, string aFakultate, string adizm_diena, int anumber)

    {

    FIO=aFIO;

    number_read_ticket=anumber_read_ticket;

    fakultate=aFakultate;

    dizm_diena=adizm_diena;

    number=anumber;     

    }   

    //////////////////////////////////

    ////////////info/////////////////

    public void Info()

    {

    Console.WriteLine("----------------------------------------------------" 

    + " " + "\n Reader FIO: " + FIO.ToString() 

    + " " + "\n Reader Number read ticker: " + number_read_ticket.ToString()

    + " " + "\n Reader Fakultate: " + fakultate.ToString()

    + " " + "\n Reader Date number: " + dizm_diena.ToString()

    + " " + "\n Reader Phone nuber: " + number.ToString()

    + " " + "\n----------------------------------------------------");

    }

    //////////////////////////////////  

    /////////////method takebook//////      

    public void takebook()

    {   

    Console.WriteLine("\nHow much money(EUR) reader have?");

    s=Console.ReadLine();

    reader_money=double.Parse(s);       

    Console.WriteLine("How much book you take?");

    s=Console.ReadLine();

    book_amount=int.Parse(s);

    Console.WriteLine("----------------------------------------");      

    Console.WriteLine("What book you wanna take?");

    Console.WriteLine("1: «Lord of the Rings»" + " --Book price: " + book_1 + " Eur");

    Console.WriteLine("2: «Winnie the Pooh»" + " --Book price: " + book_2 + " Eur");

    Console.WriteLine("3: «Harry Potter and the Goblet of Fire»" + " --Book price: " + book_3 + " Eur");

    Console.WriteLine("4: «One hundred years of loneliness»" + " --Book price: " + book_4 + " Eur");

    Console.WriteLine("5: «Alice in Wonderland»" + " --Book price: " + book_5 + " Eur");

    Console.WriteLine("----------------------------------------");  

    for(int k=0; k<book_amount;k++)

    {   

    s=Console.ReadLine();

    chosen_book=int.Parse(s);

    if(chosen_book==1)

    {

    Console.WriteLine(FIO + "«Lord of the Rings»" + " --Book price: " + book_1 + " Eur");

    save_book_price+=book_1;

    book_amount++;  

    }

    else if(chosen_book==2)

    {

    Console.WriteLine(FIO + "«Winnie the Pooh»" + " --Book price: " + book_2 + " Eur");

    save_book_price+=book_2;

    book_amount++;  

    }   

    else if(chosen_book==3)

    {

    Console.WriteLine(FIO + "«Harry Potter and the Goblet of Fire»" + " --Book price: " + book_3 + " Eur");

    save_book_price+=book_3;

    book_amount++;  

    }   

    else if(chosen_book==4)

    {

    Console.WriteLine(FIO + "«One hundred years of loneliness»" + " --Book price: " + book_4 + " Eur");

    save_book_price+=book_4;

    book_amount++;  

    }

    else if(chosen_book==5)

    {

    Console.WriteLine(FIO + "«Alice in Wonderland»" + " --Book price: " + book_5 + " Eur");

    save_book_price+=book_5;

    book_amount++;  

    }   

    }

​

    }   

    /////////////////////////////////////

    //////////method returnBook//////////

    public void returnBook()

    {   

    Console.WriteLine("How much book you back?");

    s=Console.ReadLine();

    back_book_amount=int.Parse(s);

    after_return_book_amount=book_amount-back_book_amount;///////Итоговое количетво книг    

    for(int k=0; k<back_book_amount;k++)

    {

    Console.WriteLine("----------------------------------------");      

    Console.WriteLine("What book you wanna take?");

    Console.WriteLine("1: «Lord of the Rings»" + " --Book price: " + book_1 + " Eur");

    Console.WriteLine("2: «Winnie the Pooh»" + " --Book price: " + book_2 + " Eur");

    Console.WriteLine("3: «Harry Potter and the Goblet of Fire»" + " --Book price: " + book_3 + " Eur");

    Console.WriteLine("4: «One hundred years of loneliness»" + " --Book price: " + book_4 + " Eur");

    Console.WriteLine("5: «Alice in Wonderland»" + " --Book price: " + book_5 + " Eur");

    Console.WriteLine("----------------------------------------");

    save_book_price2+=back_book_price;

    }

    }   

    //////////////////////////////////////

    ///////////////method debt()/////////

    public void debt()

    {

    if(after_return_book_amount>0)

    {

    Console.WriteLine(FIO + " should back " + after_return_book_amount + " books ");

    }   

    else

    {

    Console.WriteLine(FIO + " nothing back ");

    }   

    }   

    //////////////////////////////////////  

    //////////method cash////////////////

    public void cash()

    {

    book_cash=save_book_price-save_book_price2;

    reader_cash=reader_money-book_cash; 

    Console.WriteLine("----------------------------------------");  

    Console.WriteLine("book total price for " + FIO + " is " + reader_money + " - " + book_cash + " = " + reader_cash);

    Console.WriteLine("----------------------------------------");  

    }   

    }   

​

    public static void Main()

    {

        Reader A=new Reader("Ivanov Ivan Ivanovic",81185,"Math","11.12.02", 28860173);  

        Reader B=new Reader("Aleksandrov Aleksandr Aleksandrovic",22345,"Biology","14.06.00", 28798001);

        A.Info();

        A.takebook();

        A.returnBook();

        A.debt();

        A.cash();

    }

}