#include "argparse/argparse.hpp" int main(int argc, char **argv) { // A parser object Parser p; // Program data corresponding to flags, options, and positional arguments bool verbose = false; std::string toPrint; std::string maybePrint; int repeats = 1; // Inform the parser of the program data. It will do type-specific conversion // from string. // An option invoked with `--repeat N` p.add_option(repeats, "--repeat"); // A flag invoked with `--verbose` or `-v` p.add_flag(verbose, "--verbose", "-v"); // a required positional argument (position 1) p.add_positional(toPrint)->required(); // an optional positional argument (position 2) auto psnl = p.add_positional(maybePrint); // If there was an error during parsing, report it. if (!p.parse(argc, argv)) { std::cerr << p.help(); exit(EXIT_FAILURE); } // Execute the program logic if (verbose) { std::cerr << "about to print '" << toPrint << "' " << repeats << " times"; if (psnl->found()) { std::cerr << ", then '" << maybePrint << "'"; } std::cerr << std::endl; } for (int i = 0; i < repeats; ++i) { std::cout << toPrint; } if (psnl->found()) { std::cout << maybePrint; } std::cout << std::endl; return 0; }