public static void Main(string[] args)
{
CountdownClock c = new CountdownClock();
Subscriber s1 = new Subscriber("Ksenya Rogaleva");
Subscriber s2 = new Subscriber("Zykov Timophey");
s1.Subscribe(c);
s2.Subscribe(c);
Console.WriteLine("Enter waiting time in seconds:");
var time = int.Parse(Console.ReadLine());
Console.WriteLine("Enter the message:");
var msg = Console.ReadLine();
c.SimulateCountdownClock(time, msg);
s1.UnSubscribe(c);
c.SimulateCountdownClock(time, msg);
Console.ReadKey();
}
/// <summary>
/// Unregisters the callback.
/// </summary>
/// <param name="c">Instance of the class <c>CountdownClock</c>.</param>
public void UnSubscribe(CountdownClock c)
{
c.TimeEnded -= this.PrintMessage;
}
