static void Main(string[] args)
{
/*********Simple Delegate*********/
BookDB bookDB = new BookDB();
bookDB.AddBook(new Book("Title 1", "Author1", true, 0.1));
bookDB.AddBook(new Book("Title 2", "Author2", false, 0.2));
bookDB.AddBook(new Book("Title 3", "Author3", true, 0.1));
bookDB.AddBook(new Book("Title 4", "Author4", false, 0.2));
bookDB.AddBook(new Book("Title 5", "Author5", true, 0.1));
PriceCalculator calculator = new PriceCalculator();
bookDB.ProcessPaperbackBooks(new ProcessBookDelegate(calculator.PrintPrice));
bookDB.ProcessPaperbackBooks(new ProcessBookDelegate(PrintTitle));
calculator.PrintPriceTotal();
Console.ReadLine();
/*********Compose Delegate*********/
ComposeDelegate a, b, c, d;
// Create the delegate object a that references
// the method Hello:
a = new ComposeDelegate(Hello);
// Create the delegate object b that references
// the method Goodbye:
b = new ComposeDelegate(Goodbye);
// The two delegates, a and b, are composed to form c:
c = a + b;
// Remove a from the composed delegate, leaving d,
// which calls only the method Goodbye:
d = c - a;
Console.WriteLine("Invoking delegate a:");
a("A");
Console.WriteLine("Invoking delegate b:");
b("B");
Console.WriteLine("Invoking delegate c:");
c("C");
Console.WriteLine("Invoking delegate d:");
d("D");
Console.ReadLine();
}