static void Main(string[] args) { Receptionist receptionist = new Receptionist(); bool success = false; while (!success) { success = receptionist.LogIn(); } PatientApptManager patientApptManager = new PatientApptManager(); bool endApp = false; while (!endApp) { DisplayOptions(); string input = Console.ReadLine(); switch (input) { case "1": patientApptManager.AddNewPatientData(); break; case "2": patientApptManager.MakeNewAppointment(); break; case "3": patientApptManager.ManageAppointment(); break; case "4": patientApptManager.ShowAppointmentDashboard(); break; case "5": receptionist.ManageProfile(); break; case "6": endApp = true; break; default: break; } } }