C#

using System;
using System.Threading;
//Example in using sleep() and Threads in C#
namespace ThreadSys
{
    /// <summary>
    /// Threadclass
    /// </summary>
    class ThreadClass
    {
        int loopCnt, loopDelay;
        Thread cThread;
        public string studentname;
        static Semaphore semaphore = new Semaphore(1,1);
        public ThreadClass(string name, int delay)
        {
            loopCnt = 0;
            loopDelay = delay;
            cThread = new Thread(new ThreadStart(this.run));
            cThread.Name = name;
            
            cThread.Start();
        }
        // The main function in the ThreadClass
        void run()
        {
            Console.WriteLine(" Starting " + cThread.Name);
            do
            {
                loopCnt++;
                Thread.Sleep(loopDelay);
                Console.Write(" ");
                semaphore.WaitOne();
                Console.Write(cThread.Name);
                
                Console.Write(": ");
                Console.WriteLine("Loop=" + loopCnt);
                
                semaphore.Release();

            } while (loopCnt < 5);
            // Ending of the thread
            Console.WriteLine(" Ending " + cThread.Name);

        }
    }

    // The application
    class ThreadSys
    {
        /// <summary>
        /// Start of the main program
        /// </summary>
        static void Main(string[] args)
        {
            Console.WriteLine(" Start of main program ");
            // Making 3 threads ..
            ThreadClass ct1 = new ThreadClass("[T1]:", 95);            
            ThreadClass ct2 = new ThreadClass("[T2]:", 279);
            ThreadClass ct3 = new ThreadClass("[T3]:", 463);
            // Wait while the threads are running ...
            for (int cnt = 0; cnt < 30; cnt++)
            {
                Console.Write(".");
                Thread.Sleep(100);
            }

        }
    }
}