using System;
using System.Text.RegularExpressions;

public class EntryPoint
{
    static void Main( string[] args ) {
        // Create regex to search for IP address pattern.
        string pattern = @"([01]?dd?|2[0-4]d|25[0-5])." +
                         @"([01]?dd?|2[0-4]d|25[0-5])." +
                         @"([01]?dd?|2[0-4]d|25[0-5])." +
                         @"([01]?dd?|2[0-4]d|25[0-5])";
        Regex regex = new Regex( pattern );
        Match match = regex.Match( "192.168.169.1" );
        while( match.Success ) {
            Console.WriteLine( "IP Address found at {0} with " +
                               "value of {1}",
                               match.Index,
                               match.Value );
            Console.WriteLine( "Groups are:" );
            foreach( Group g in match.Groups ) {
                Console.WriteLine( "	{0} at {1}",
                                   g.Value,
                                   g.Index );
            }
            match = match.NextMatch();            
        }
    }
}

           
          

   

using System;
using System.Text.RegularExpressions;

public class EntryPoint
{
    static void Main( string[] args ) {

        // Create regex to search for IP address pattern.
        string pattern = @"([01]?dd?|2[0-4]d|25[0-5])." +
                         @"([01]?dd?|2[0-4]d|25[0-5])." +
                         @"([01]?dd?|2[0-4]d|25[0-5])." +
                         @"([01]?dd?|2[0-4]d|25[0-5])";
        Regex regex = new Regex( pattern );
        Match match = regex.Match( "192.169.168.1" );
        while( match.Success ) {
            Console.WriteLine( "IP Address found at {0} with " +
                               "value of {1}",
                               match.Index,
                               match.Value );

            match = match.NextMatch();
        }
        
    }
}


           
          

   


using System;
using System.Text.RegularExpressions;

public class EntryPoint
{
    static void Main( string[] args ) {

        // Create regex to search for IP address pattern.
        string pattern = @"dd?d?.dd?d?.dd?d?.dd?d?";
        Regex regex = new Regex( pattern );
        Match match = regex.Match( "192.168.169.1" );
        while( match.Success ) {
            Console.WriteLine( "IP Address found at {0} with " +
                               "value of {1}",
                               match.Index,
                               match.Value );

            match = match.NextMatch();
        }
        
    }
}

           
          

   
 


using System;
using System.Threading;

public class NonSignaledManual {
    public static void Main() {
        ManualResetEvent mansig = new ManualResetEvent(false);
        Console.WriteLine("ManualResetEvent Before WaitOne ");
        bool b = mansig.WaitOne(1000, false);
        Console.WriteLine("ManualResetEvent After WaitOne " + b);
    }
}

    

   
 


using System;
using System.Threading;


class Reset {
    [STAThread]
    static void Main() {
        ManualResetEvent manRE;
        manRE = new ManualResetEvent(true);
        bool state = manRE.WaitOne(1000, true);
        Console.WriteLine(state);

        manRE.Reset();
        state = manRE.WaitOne(5000, true);
        Console.WriteLine(state);
    }
}

    

   
 

using System;
using System.Threading;

class ManualSet{
    [STAThread]
    static void Main(string[] args) {
        ManualResetEvent manRE = new ManualResetEvent(false);
        bool state = manRE.WaitOne(5000, true);
        Console.WriteLine("ManualResetEvent After first WaitOne " + state);

        manRE.Set();
        state = manRE.WaitOne(5000, true);
        Console.WriteLine("ManualResetEvent After second WaitOne " + state);
    }
}
   

    

   

using System;

class Class1{

  static void Main(string[] args)  {
    #if false
      Console.WriteLine("A");
    #elif false
      Console.WriteLine("B");
    #else
            Console.WriteLine("C");
      #endif
  }
}