theme changed

labs/lab9/MyClass/Book.cs

@@ -0,0 +1,102 @@
+using System;
+
+class Book : Item
+{
+    private String author;
+    private String title;
+    private String publisher;
+    private int pages;
+    private int year;
+
+    private static double price = 9;
+    private bool returnSrok = false;
+
+    static Book()
+    {
+        price = 10;
+    }
+
+    public Book()
+    {
+
+    }
+
+
+    public Book(String author, String title, String publisher, int pages, int year, long invNumber, bool taken) : base (invNumber, taken)
+    {
+        this.author = author;
+        this.title = title;
+        this.publisher = publisher;
+        this.pages = pages;
+        this.year = year;
+    }
+
+    public Book(String author, String title)
+    {
+        this.author = author;
+        this.title = title;
+    }
+
+    public void SetBook(String author, String title, String publisher, int pages, int year)
+    {
+        this.author = author;
+        this.title = title;
+        this.publisher = publisher;
+        this.pages = pages;
+        this.year = year;
+    }
+
+    public static void SetPrice(double price)
+    {
+        Book.price = price;
+    }
+
+
+    public override void Show()
+    {
+        Console.WriteLine("\nКнига:\n Автор: {0}\n Название: {1}\n Год издания: {2}\n {3} стр.\n Стоимость аренды: {4}", author, title, year, pages, Book.price);
+        base.Show();
+    }
+
+
+    public double PriceBook(int s)
+    {
+        double cost = s * price;
+        return cost;
+    }
+
+    public override void Return()
+    {
+        taken = ReturnSrok;
+    }
+
+    public delegate void ProcessBookDelegate(Book book);
+
+    public void ProcessPaperbackBooks(ProcessBookDelegate processBook)
+    {
+        if (ReturnSrok)
+        processBook(this);
+   }
+
+    public static event ProcessBookDelegate RetSrok;
+
+    public bool ReturnSrok
+    {
+        get
+        {
+            return returnSrok;
+        }
+        set 
+        {
+            returnSrok = value;
+            if (ReturnSrok == true)
+                RetSrok(this);
+        }
+    }
+
+    public override string ToString()
+    {
+        string str = this.title + ", " + this.author + " Инв. номер " + this.invNumber;
+        return str;
+    }
+}