arg_ex2.cc

An exmaple with sub-parser

#include <arg.hh>
using namespace arg;
int main(int argc, char **argv)
{
    Parser p;
    auto sp = std::make_shared<SubParser>();
    int va1 = 0;
    sp->add_opt("param1").stow(va1)
        .help("parameter 1")
        .show_default();
    double va2 = 1.0;
    sp->add_opt("param2").stow(va2)
        .help("parameter 2")
        .show_default();
    int op;
    sp->add_opt("opt1").set(& op, 1)
        .help("perform op 1");
    sp->add_opt("opt2").set(& op, 2)
        .help("perform op 2");
    sp->add_opt_help();
    p.add_opt('o', "options").store(sp);
    p.add_opt_help();
    p.parse(argc, argv);
    return 0;
}