static void Main(string[] args)
{
const string OutputFileName = "sorted-names-list";
// Throw if no args are passed in.
if (args.Length == 0)
{
throw new Exception("Missing Argument: the path to a file containing names is required.");
}
// Get the filePath from first arg then read its text.
string inputFilePath = args[0];
string[] names = TextFileReader.Read(inputFilePath);
// Create an instance of the NameSorter and sort the names.
NameSorter nameSorter = new NameSorter();
names = nameSorter.SortByLastName(names);
// Display and Write the names.
NameWriter.WriteNamesToConsole(names);
NameWriter.WriteNamesToFile(names, OutputFileName);
}