public void RunProgram()
        {
            Helpdesk theHelpdeskObject = new Helpdesk();
            Ticket   tempTicket;

            bool   fContinue = true;
            string desc; // description of problem, for inputting new problems

            while (fContinue)
            {
                int userChoice = -1;
                while (userChoice < 1 || userChoice > 6)
                {
                    Console.WriteLine(); // visual spacer
                    Console.WriteLine(" Your options are:");
                    Console.WriteLine("1) View all unsolved tickets");
                    Console.WriteLine("2) Add a high-priority ticket");
                    Console.WriteLine("3) Add a low-priority ticket");
                    Console.WriteLine("4) Resolve the first ticket");
                    Console.WriteLine("5) Run tests");
                    Console.WriteLine("6) Quit");
                    Console.Write("Type in your choice here:");
                    if (!Int32.TryParse(Console.ReadLine(), out userChoice))
                    {
                        Console.WriteLine("You need to type in a number!");
                    }
                    Console.WriteLine(); // visual spacer
                }

                switch (userChoice)
                {
                case 1:
                    theHelpdeskObject.PrintAll();
                    break;

                case 2:
                    Console.WriteLine("Type in a description of the high priority task:");
                    desc = Console.ReadLine();
                    theHelpdeskObject.AddTicket(desc, Priority.High);
                    break;

                case 3:
                    Console.WriteLine("Type in a description of the low priority task:");
                    desc = Console.ReadLine();
                    theHelpdeskObject.AddTicket(desc, Priority.Low);
                    break;

                case 4:
                    if (theHelpdeskObject.isEmpty())
                    {
                        Console.WriteLine("No items to resolve!");
                    }
                    else
                    {
                        Console.WriteLine("Resolving the following item:");
                        tempTicket = theHelpdeskObject.RemoveNextTicket();
                        tempTicket.Print();
                    }
                    break;

                case 5:
                    AllTests allTests = new AllTests();
                    if (!allTests.RunTests())
                    {
                        Console.WriteLine("WARNING: One or more tests failed ; program probably won't run correctly");
                    }
                    break;

                case 6:
                    Console.WriteLine("Thanks for using the program!\nGoodbye!\n\n");
                    Console.WriteLine("<Press the enter key to exit>");
                    Console.ReadLine();
                    return;
                }
            }
        }