using MyLibrary; using System; class Program { static void Main(string[] args) { // Create Library TheLibrary library = new TheLibrary("Central Library"); // Create Bookshelf and Books Bookshelf shelf1 = new Bookshelf { ShelfNumber = 1 }; shelf1.AddBook(new Book { Title = "C# Programming", Author = "John Doe" }); shelf1.AddBook(new Book { Title = "Data Structures", Author = "Jane Smith" }); // Add Bookshelf to Library (Composition) library.AddBookshelf(shelf1); // Display Library Info library.DisplayLibraryInfo(); // Create Member with Aggregated Address Address memberAddress = new Address { Street = "123 Main St", City = "Metropolis", State = "NY", Pincode = "10001" }; Member member = new Member { Name = "Alice", Age = 25, MemberAddress = memberAddress, Card = new LibraryCard { CardNumber = 101, IssuedDate = DateTime.Now } }; // Create Librarian Librarian librarian = new Librarian { Name = "Mr. Smith", Age = 40 }; // Issue Book (Association) Book selectedBook = shelf1.Books[0]; // Select the first book on the shelf librarian.IssueBook(member, selectedBook); // Display Member Info and Address Console.WriteLine($"Member Info:\nName: {member.Name}\nAddress: {member.MemberAddress.Street}, {member.MemberAddress.City}"); Console.ReadLine(); } }