using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;

namespace Tools
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("the library path:");

            string filePath = Console.ReadLine();

            DirectoryInfo dir = Directory.CreateDirectory(filePath);

            FileInfo[] files = dir.GetFiles();

            string txtFileName = Path.Combine(filePath, "lib.txt");

            foreach (var file in files)
            {
                File.AppendAllText(txtFileName,file.Name);
                File.AppendAllText(txtFileName, "\r\n");
            }
        }
    }
}