using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Time Converter\n");

        string longStrStart;

        string longStrEnd;

        bool quit = false;

        do {

            longStrStart = DateTime.Now.ToFileTime().ToString();

            Console.Write("Start time is NOW in long: " + longStrStart + "\n");

            Console.Write("End time in long: ");

            longStrEnd = Console.ReadLine();

            if (longStrStart== "q" || longStrStart == "quit" || longStrEnd== "q" || longStrEnd == "quit") quit = true;

            if (!quit)

            {

                long timeLongStart = Convert.ToInt64(longStrStart);

                long timeLongEnd = Convert.ToInt64(longStrEnd);

                Console.WriteLine("Start time: " + DateTime.FromFileTime(timeLongStart).ToString());

                Console.WriteLine("End time: " + DateTime.FromFileTime(timeLongEnd).ToString());

                TimeSpan ts = TimeSpan.FromTicks(timeLongEnd - timeLongStart);

                Console.WriteLine("Timespan: " + ts.Days.ToString() + " day(s), " + ts.Hours.ToString() + "hour(s), " +ts.Minutes.ToString()+" minute(s)");

                Console.WriteLine("");

            }

        } while( quit == false);

    }

}