#includeIn this example, we create an ArgList object with the command line arguments passed to the program. We then define three options: "help", "input", and "output". The "help" option is a flag option that simply displays a help message and exits. The "input" and "output" options are string options that require a value to be specified. We then call `args.parse()` to parse the command line arguments, and use `args.is_set()` and `args.get()` to retrieve the values of the options. The ArgList library is available as a standalone package or as part of other libraries such as Boost.int main(int argc, char** argv) { // Create an ArgList object arglist::ArgList args(argc, argv); // Define command line options args.add_option("help", 'h', "Show help message"); args.add_option("input", 'i', "Input file", true); args.add_option("output", 'o', "Output file", true); // Parse the command line arguments args.parse(); // Check if the help option was specified if (args.is_set("help")) { std::cout << args.help_message() << std::endl; return 0; } // Get the input and output file names std::string input_file = args.get("input"); std::string output_file = args.get("output"); // Process the input file and save the results to the output file // ... }