using System;

public class Program

{

    public static void Main()

    {

        //Inline Example of word count.

        string phrase = "The dog caught the ball.";

        int wordCount = phrase.Split(' ').Length;

        Console.WriteLine(wordCount);

        //Example of using a method to do word count.

        Console.WriteLine(WordCount(phrase));

        //Example of using our extension method.

        Console.WriteLine(phrase.WordCount());

    }

    public static int WordCount(string input){

        return input.Split(' ').Length;

    }

}

​

public static class ExtensionMethods {

    public static int WordCount(this string input){

        return input.Split(' ').Length;

    }

}

​

​