using System;

using System.Media;

using System.Timers;

namespace alarmClock

{

class MainClass

{

static Timer timer;

public static void Main (string[] args)

{

Console.WriteLine ("How many seconds do you want me to beep?");

string seconds = Console.ReadLine ();

int secs;

if (int.TryParse(seconds, out secs)) {

secs*=1000;

// Create a timer with a two second interval.

timer = new System.Timers.Timer (secs);

// Hook up the Elapsed event for the timer.

timer.Elapsed += OnTimedEvent;

// Start the timer

timer.Enabled = true;

//Garbage Collector keep timer alive for eternity

GC.KeepAlive (timer);

Console.WriteLine ("Press the Enter key to exit the program at any time... ");

Console.ReadLine ();

}

else

{

Console.WriteLine ("Uh-Oh, enter a valid integer");

}

}

private static void OnTimedEvent(Object source, System.Timers.ElapsedEventArgs e)

{

Console.Beep ();

}

}

}