c++如何在linux下变成

sudo apt update
sudo apt install g++

#include <iostream>

int main() {
    std::cout << "Hello, World!" << std::endl;
    return 0;
}

g++ -o hello hello.cpp

./hello

#include <boost/program_options.hpp>
#include <iostream>

namespace po = boost::program_options;

int main(int argc, char* argv[]) {
    po::options_description desc("Allowed options");
    desc.add_options()
        ("help", "produce help message")
        ("compression", po::value<int>(), "set compression level");

    po::variables_map vm;
    po::store(po::parse_command_line(argc, argv, desc), vm);
    po::notify(vm);

    if (vm.count("help")) {
        std::cout << desc << "\n";
        return 1;
    }

    if (vm.count("compression")) {
        std::cout << "Compression level was set to "
                  << vm["compression"].as<int>() << ".\n";
    } else {
        std::cout << "Compression level was not set.\n";
    }
    return 0;
}

g++ -o my_program my_program.cpp -lboost_program_options