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

int
main()
{
	using namespace boost::program_options;
	options_description desc("Options");
	std::uint8_t num = 0;
	desc.add_options()
		("num", value(&num))
		;

	variables_map vm;
	const char *const args[] = { "prog", "--num=241" };
	store(parse_command_line(2, args, desc), vm);
	notify(vm);
	assert(num == 241);
}