P05_WriteToFile

using System.Collections.Generic;
using System.IO;
using System.Linq;

namespace P05_WriteToFile
{
    class WriteToFile
    {
        static void Main()
        {
            string textFromFile = File.ReadAllText("sample_text.txt");
            var fullText = new List<string>();
            var text = textFromFile.Split(".,!?:".ToCharArray()).ToList();
            foreach (var word in text)
            {
                fullText.Add(word);
            }
            File.WriteAllText("output.txt", string.Join("", fullText));
        }
    }
}