static async Task Main()
{
IAirTrafficControl mehrabadAirTrafficControl = new AirTrafficControl();
AirplaneBase airbusAirplane = new AirbusAirplane(mehrabadAirTrafficControl);
AirplaneBase boeingAirplane = new BoeingAirplane(mehrabadAirTrafficControl);
mehrabadAirTrafficControl.AddAirplanes(airbusAirplane, boeingAirplane);
airbusAirplane.Send("Can we land right now ?");
Console.WriteLine("----------");
boeingAirplane.Send("No! We're landing, wait ...");
Console.WriteLine("----------");
// Demonstrate landing ...
Console.WriteLine("Boeing is landing ...");
await Task.Delay(TimeSpan.FromSeconds(3));
Console.WriteLine("----------");
boeingAirplane.Send("We landed.");
Console.WriteLine("----------");
airbusAirplane.Send("OK, We're going to land ...");
Console.WriteLine("----------");
boeingAirplane.Send("Good luck.");
Console.ReadKey();
}
