P04_PunctuationFinder

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

namespace P04_PunctuationFinder
{
    class PunctuationFinder
    {
        static void Main()
        {
            string textFromFile = File.ReadAllText("sample_text.txt");
            Regex regex = new Regex(@"[,\.!?\:]");
            var match = regex.Matches(textFromFile);
            List<string> charList = new List<string>();
            foreach (Match item in match)
            {
               charList.Add(item.Value);
            }
            Console.WriteLine(string.Join(", ", charList));

            //String[] input = File.ReadAllLines("sample_text.txt");
            //List<char> punctoationChars = new List<char>();

            //char[] punctList = new[] {',', '.', '!', '?', ':'};
            //foreach (string line in input)
            //{
            //    for (int i = 0; i < line.Length; i++)
            //    {
            //        if (punctList.Contains(line[i]))
            //        {
            //            punctoationChars.Add(line[i]);
            //        }
            //    }
            //}
            //Console.Write(string.Join(", ", punctoationChars));
        }
    }
}