using System;

​

namespace TimeElapsed

{

    class Program

    {

        static void Main(string[] args)

        {

            string tryAgain;

            string hour;

            string minute;

            string second;

​

            int totalHour;

            int totalMinute;

            int totalSecond;

​

            do

            {

                Console.Clear();

                Console.WriteLine("Timelapsed. \n");

                Console.Write("Enter time in hour(s): ");

                hour = Console.ReadLine();

​

                if (Int32.TryParse(hour, out totalHour) == true)

                {

​

                    if (totalHour < 0 || totalHour > 24)

                    {

                        Console.WriteLine("Invalid input, please insert [0 - 24] only");

                    }

                    else

                    {

                        Console.Write("Enter time in minute(s): ");

                        minute = Console.ReadLine();

​

                        if (Int32.TryParse(minute, out totalMinute) == true)

                        {

                            if (totalMinute < 0 || totalMinute > 60)

                            {

                                Console.WriteLine("Invalid input, please insert [0 - 60] only");

                            }

                            else

                            {

                                Console.Write("Enter time in second(s): ");

                                second = Console.ReadLine();

​

                                if (Int32.TryParse(second, out totalSecond) == true)

                                {

                                    if (totalSecond < 0 || totalSecond > 60)

                                    {

                                        Console.WriteLine("Invalid input, please insert [0 - 60] only");

                                    }

                                    else

                                    {

                                        Console.WriteLine("The equivalent time in second is: {0:#,#0} ", (totalHour * 3600) + (totalMinute * 60) + totalSecond);

                                    }

                                }

                                else

                                {

                                    Console.WriteLine("Invalid input please insert a number");

                                }

                            }

​

                        }

                        else

                        {

                            Console.WriteLine("Invalid input please insert a number");

                        }

                    }

                }

                else

                {

                    Console.WriteLine("Invalid input please insert a number");

                }

​

                Console.Write("Do you want to try again? (Y/y): ");

                tryAgain = Console.ReadLine();

​

            } while ((tryAgain == "Y") || (tryAgain == "y"));

​

            Console.WriteLine("End of the program.");

            Console.ReadKey();

​

        }

    }

}