static void Main(string[] args) { Customer customer1 = new Customer(); customer1.Id = 1; customer1.FirstName = "Ahsen"; customer1.LastName = "Çelen"; customer1.AccountNumber = 123456789; Customer customer2 = new Customer(); customer2.Id = 2; customer2.FirstName = "Engin"; customer2.LastName = "Demiroğ"; customer2.AccountNumber = 987654321; Customer customer3 = new Customer(); customer3.Id = 3; customer3.FirstName = "Alara"; customer3.LastName = "Cesur"; customer3.AccountNumber = 456123789; Customer[] customers = new Customer[] { customer1, customer2, customer3 }; CustomerManager customerManager = new CustomerManager(); foreach (Customer customer in customers) { customerManager.AddCustomer(customer); } Console.WriteLine("--------------------"); Console.WriteLine("Lütfen, silmek istediğiniz kişinin Id'sini giriniz."); int deleteId = Convert.ToInt32(Console.ReadLine()); foreach (Customer customer in customers) { if (customer.Id == deleteId) { customerManager.DeleteCumstomer(customer); break; } } Console.WriteLine("----------------------"); Console.WriteLine("Müşteriler Listelendi"); foreach (Customer customer in customers) { customerManager.ListCustomer(customer); } }