namespace SplitWordIntoCountExtensionMethod
{
    internal class Program
    {
        static void Main(string[] args)
        {
            string input = "Das ist der Versuch nummer 1";
            Console.WriteLine($"Word count: {input.SplitIntoWords()}");
        }
    }
    static class WordCountExtension
    {
        public static int SplitIntoWords(this string input)
        {
            int freq = 0;
            string[] index = input.Split(" ");
            for (int i = 0; i < index.Length; i++)
            {
                freq++;
            }
            return freq;
        }
    }
}