using System; 
 using System.Collections.Generic; 
 using System.Text; 
 using System.Threading; 
  
 namespace ConsoleApplication2 
 { 
     public class Program 
     { 
         static void Main(string[] args) 
         { 
             Console.WriteLine("Main Start."); 
  
             try 
             { 
                 HoldIntegerSync his = new HoldIntegerSync(); 
                 Consumer consumer = new Consumer(his); 
                 Consumer consumerTwo = new Consumer(his); 
  
                 Producer producer = new Producer(his); 
  
                 Thread producerThread = new Thread(new ThreadStart(producer.Produce)); 
                 producerThread.Name = "Producer"; 
  
                 Thread consumerThread1 = new Thread(new ThreadStart(consumer.Consume)); 
                 consumerThread1.Name = "Consumer"; 
  
                 Thread consumerThread2 = new Thread(new ThreadStart(consumerTwo.Consume)); 
                 consumerThread2.Name = "ConsumerTwo"; 
  
                 consumerThread1.Start(); 
                 consumerThread2.Start(); 
                 producerThread.Start(); 
  
             } 
             catch (Exception e) 
             { 
                 Console.WriteLine("Catch Exception : \n" + e.ToString()); 
  
                 Console.WriteLine("Exception Message : \n" + e.Message); 
  
                 Console.WriteLine("Exception Inner :\n" + e.InnerException); 
             } 
  
             Console.WriteLine("Main End."); 
         } 
     } 
  
     class Producer 
     { 
         private Random rd = new Random(10); 
          
         private HoldIntegerSync sync; 
         public Producer(HoldIntegerSync his) 
         { 
             this.sync = his; 
         } 
  
         public void Produce() 
         { 
             sync.Buffer = rd.Next(); 
         } 
     } 
  
     class Consumer 
     { 
         private HoldIntegerSync sync; 
         public Consumer(HoldIntegerSync his) 
         { 
             this.