Regular Expression

This article is about Regular Expression.
Following code is written in C#

Regular Expression Output

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Text.RegularExpressions;

namespace regularExpression

{

  class Program

   {

      private static void showMatch(string text, string expr)

      {

         Console.WriteLinel("The Expression: " + expr);

         MatchCollection mc = Regex.Matches(text, expr);

         foreach (Match m in mc)

         {

            Console.WriteLine(m);

         }

      }

      static void Main(string[] args)

      {

         string str = " Basit , Jamil, Faisalabad, phone 123123123 , social security no 123-13-123 ";

         Console.WriteLine("Matching words start with 'B' and ends with 'T':");

            showMatch(str, @"\bJ\S*l\b");// Words that start with R and end with n

            showMatch(str, @"\b\w{6}\b");//  Find six letter words

            showMatch(str, @"\b\w{4,6}\b"); // Find all five and six letter words

            showMatch(str, @"\d{3}-\d{2}-\d{4}"); //Social security number Format [xxx-xx-xxxx]

         Console.ReadKey();

      }

   }

}