static void Main(string[] args)
{
var waitingRoom = new WaitingRoom();
var patient1 = new Patient(waitingRoom);
var patient2 = new Patient(waitingRoom);
var patient3 = new Patient(waitingRoom);
var patient4 = new Patient(waitingRoom);
waitingRoom.RunWaitingRoom();
}
public Patient(WaitingRoom waitingRoom)
{
PatientNo = waitingRoom.PatientEntersRoom();
waitingRoom.NumberChanged += OnNumberChanged;
WaitingRoom = waitingRoom;
}