using System;

using System.Collections.Generic;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

        //1

        //Console.WriteLine("Hello World");

         /*string[] input = { "Brachiosaurus", 

                           "Amargasaurus", 

                           "Mamenchisaurus" };

​

        List<string> dinosaurs = new List<string>(input);

​

        Console.WriteLine("\nCapacity: {0}", dinosaurs.Capacity);

​

        Console.WriteLine();

        foreach( string dinosaur in dinosaurs )

        {

            Console.WriteLine(dinosaur);

        }*/

        //2

        /*string texto="select campo01";

        char[] ArrTexto= texto.ToCharArray();

        Console.WriteLine(ArrTexto);*/

        //3

        /*var foos = "select campo01 <sdasdsa>";

        var fooArray = foos.Split(' ');

        foos = String.Join(",", fooArray);

        Console.WriteLine(fooArray[0]);*/

        //4

        /*char[] delimiterChars = { ' ', ',', '.', ':', '\t' };

​

        string text = "one\ttwo three:four,five six seven";

        System.Console.WriteLine("Original text: '{0}'", text);

​

        string[] words = text.Split(delimiterChars);

        System.Console.WriteLine("{0} words in text:", words.Length);

​

        foreach (string s in words)

        {

            System.Console.WriteLine(s);

        }*/

        //5

            //char[] delimitadores = {' ','<','>','.'};

      string texto = "select campo01 from <p_var_dwr>.tabla02 where campo01<=campo03 Who writer these noter?";//"Who writes these notes?";

        var arrtexto = texto.ToCharArray();

      //string[] pal_reserv = {"from","where"};

        string reser="p_var_";

      string pattern = @"\b"+reser+@"\w+\b";

        string mostrar="";

      //Regex rgx = new Regex(pattern);

      //string sentence = "Who writes these notes?";

      //string[] cap = texto.Split(delimitadores);

      Console.WriteLine(texto);

      foreach (Match match in Regex.Matches(texto, pattern)) {

       Console.WriteLine("Found '{0}' at position {1}",

        match.Value, match.Index);

       //Console.WriteLine(arrtexto[match.Index+reser.Length]);

          for (int i=match.Index-1;i<(match.Index)+reser.Length;i++){

              //Console.WriteLine(arrtexto[i]);

              mostrar=mostrar+arrtexto[i];

          }

          Console.WriteLine(mostrar);

          Console.WriteLine("Otro:: "+texto.Substring(match.Index+reser.Length,3));

      }

    }

}