cpp-argparse/tutorial/advanced2.cpp at master · kkarbowiak/cpp-argparse · GitHub

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#include "argparse.hpp"
#include <iostream>
#include <cmath>

auto main(int argc, char * argv[]) -> int
{
    auto parser = argparse::ArgumentParser();
    parser.add_argument("x").type<int>().help("the base");
    parser.add_argument("y").type<int>().help("the exponent");
    parser.add_argument("-v", "--verbosity").type<int>().default_(0);
    auto parsed = parser.parse_args(argc, argv);
    auto base = parsed.get_value<int>("x");
    auto exp = parsed.get_value<int>("y");
    auto answer = std::pow(base, exp);
    auto verbosity = parsed.get_value<int>("verbosity");
    if (verbosity >= 2)
    {
        std::cout << "Running '" << argv[0] << "'\n";
    }
    if (verbosity >= 1)
    {
        std::cout << base << "^" << exp << " == ";
    }

    std::cout << answer << '\n';
}