int main()
{
Sensor *sensor = new Sensor(); // subject
Observer *display = new Display(); // Observer
Observer *display2 = new GUI(); // Observer2
// register observer with observable class
sensor->attach(display);
sensor->attach(display2);
// Simulate measuring temp over time
for(int i=0; i < 20; i++)
{
sensor->takeReading();
sensor->notify();
cout << endl;
}
return 0;
}
