static void Main(string[] args)
{
Lamp lamp = new Lamp();
lamp.TurnOnLight();
lamp.ReplaceBulb(30);
lamp.GetState();
Console.WriteLine();
DeskLamp deskLamp = new DeskLamp(25, Place.Chair, true);
deskLamp.GetState();
deskLamp.MoveDeskLamp(Place.Floor);
deskLamp.GetState();
Console.WriteLine();
LigthSource[] allLamps = { lamp, deskLamp };
foreach (LigthSource l in allLamps)
{
(l as Lamp).ReplaceBulb(50);
if (l is DeskLamp)
{
(l as DeskLamp).MoveDeskLamp(Place.Table);
}
l.TurnOffLight();
l.GetState();
Console.WriteLine();
}
}