static void Main(string[] args) { Subject subject = new Subject(); IObserver display = new Display(); IObserver dips1 = new DisplayNew(); subject.RegisterObserver(dips1); subject.RegisterObserver(display); subject.SetMeasurement((float)10.2, (float)11.2, (float)13.2); subject.RemoveObserver(display); subject.SetMeasurement((float)7.2, (float)8.2, (float)9.2); }