Ejemplo n.º 1
0
        static void Main(string[] args)
        {
            ChangeMaker change = new ChangeMaker();

            change.AddDefaultCurrencies();

            string filename;

            if (args.Length > 0)
            {
                filename = args[0];
            }
            else
            {
                Console.WriteLine("Please enter a file name to parse: ");
                filename = Console.ReadLine();
            }

            List <RegisterTransaction> transactions;

            transactions = ReadFile(filename);

            foreach (RegisterTransaction trans in transactions)
            {
                trans.change = change.GetChange(trans.total, trans.paid);
                Console.WriteLine(trans.change);
            }

            Console.WriteLine("Press enter to exit.");
            Console.ReadLine();
        }
Ejemplo n.º 2
0
        static void Main(string[] args)
        {
            if (args.Length != 1)
            {
                Console.WriteLine("There must be exactly 1 argument (input file path)");
                return;
            }

            var amountsFilePath = args[0];

            try
            {
                // Read each line in file.
                using (var sr = new StreamReader(amountsFilePath))
                {
                    // Write output file, with a ".out" extension.
                    using (var sw = new StreamWriter(amountsFilePath + ".out"))
                    {
                        string line;
                        while ((line = sr.ReadLine()) != null)
                        {
                            line = line.Trim();
                            if (string.IsNullOrEmpty(line))
                            {
                                // Nothing to do.
                                continue;
                            }

                            // Get amount-owed string and amount-paid string.
                            var tokens = line.Split(",".ToCharArray());
                            if (tokens.Length != 2)
                            {
                                // Write error for this line but continue processing lines...
                                Console.WriteLine("Error reading input file: line does not contain 2 comma-separated strings: " + line);
                                continue;
                            }

                            var amountOwed = ValidateAmount(tokens[0].Trim());
                            var amountPaid = ValidateAmount(tokens[1].Trim());

                            if (amountOwed < 0 || amountPaid < 0 || amountPaid < amountOwed)
                            {
                                Console.WriteLine("Invalid values found while reading line: " + line);
                                continue;
                            }

                            // Make change and write it to output file.
                            var changeMaker = new ChangeMaker(amountOwed, amountPaid);
                            var change      = changeMaker.MakeChange();

                            sw.WriteLine(change);
                        }
                    }
                }
            }
            catch (Exception e)
            {
                Console.WriteLine("An error occurred while reading the input file: " + e.Message);
            }
        }