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// <Snippet3>
using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^(\w+\s?)+$";
string[] titles = { "A Tale of Two Cities",
"The Hound of the Baskervilles",
"The Protestant Ethic and the Spirit of Capitalism",
"The Origin of Species" };
string replacement = "\"$&\"";
foreach (string title in titles)
Console.WriteLine(Regex.Replace(title, pattern, replacement));
}
}
// The example displays the following output:
// "A Tale of Two Cities"
// "The Hound of the Baskervilles"
// "The Protestant Ethic and the Spirit of Capitalism"
// "The Origin of Species"
// </Snippet3>