using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Timers;
class Program
{
static int counter = 0;
static void Main(string[] args)
{
Timer myTimer = new Timer(100);
myTimer.Elapsed += new ElapsedEventHandler(WriteChar);
myTimer.Start();
Console.ReadKey();
}
static void WriteChar(object source, ElapsedEventArgs e)
{
Console.Write(counter++);
}
}