Use regular to replace word

   


using System;
using System.Text.RegularExpressions;

class RegexSubstitution
{
   public static void Main()
   {
      string testString1 = "a b c stars *****";
      Regex testRegex1 = new Regex( @"d" );

      Console.WriteLine( "Original string: " + testString1 );
      Console.WriteLine( "Every word replaced by "word": " + Regex.Replace( testString1, @"w+", "word" ) );
      
   }
}