static void Main(string[] args) { Customer customer1 = new Customer(); customer1.Id = 001; customer1.Name = "Burak"; customer1.BankNumber = 33432; customer1.CallNumber = "0 111 111 1111 "; Customer customer2 = new Customer(); customer2.Id = 002; customer2.Name = "James"; customer2.BankNumber = 33789; customer2.CallNumber = "0 222 222 2222 "; Customer customer3 = new Customer(); customer3.Id = 003; customer3.Name = "Holmes"; customer3.BankNumber = 33112; customer3.CallNumber = "0 333 333 3333 "; Customer[] customers = new Customer[] { customer1, customer2, customer3 }; CustomerManager customerManager = new CustomerManager(); Console.WriteLine("---------------Banka Yönetim Sistemi------------"); Console.WriteLine("1-->Müşteri Ekleme"); Console.WriteLine("2-->Müşteri Silme"); Console.WriteLine("3-->Müşterileri Listele"); Console.WriteLine("Yapmak İstediğiniz İşlemi Giriniz"); string operation = Console.ReadLine(); switch (operation) { case "1": customerManager.CustomerAdd(customer1); break; case "2": customerManager.CustomerDel(customer2); break; case "3": customerManager.CustomerList(customers); // break; } }