Boost练习程序（program_options）

#include <iostream>

#include <string>

#include <boost/program_options.hpp>



int main(int argc,char **argv)

{

    namespace po = boost::program_options;



    po::option_description desc("allowed options");



    desc.add_options()

        ("help,h",        "help message")

        ("version,v",    "display verison")

        ;



    po::variables_map vm;

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

    po::notify(vm);



    if (vm.count("help"))

    {

        std::cout<<desc<<std::endl;

        return 0;

    }



    if (vm.count("version"))

    {

        std::cout<<"version 0.0.1"<<std::endl;

        return 0;

    }



    std::cout<<"exec program"<<std::endl;

    return 0;



}