static void Main(string[] args) { int checkOut = 0; Console.WriteLine("Welcome To address Book"); AddressBookUtility personTo = new AddressBookUtility(); do { Console.WriteLine("choice 1: Add Person Details \nchoice 2: Editing Person Details \nchoice 3: Delete Person Details \nchoice 4: Short Person By name \nchoice 5: Short Person By State \nchoice 6: Short Persion By City \nchoice 7: Short Persion By Zip \nchoice 8: View person by city \nchoice 9: view Person by state \nchoice 10: Exit From here"); int choice = Convert.ToInt32(Console.ReadLine()); switch (choice) { case 1: personTo.AddPerson(); personTo.DisplayAddressBook(); break; case 2: personTo.EditPerson(); personTo.DisplayAddressBook(); break; case 3: personTo.DeletePerson(); personTo.DisplayAddressBook(); break; case 4: personTo.ShortPersion(); personTo.DisplayAddressBook(); break; case 5: personTo.ShortState(); break; case 6: personTo.ShortCity(); break; case 7: personTo.ShortZip(); break; case 8: personTo.ViewCity(); break; case 9: personTo.ViewState(); break; default: checkOut = 1; break; } } while(checkOut == 0); personTo.DisplayAddressBook(); }