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

namespace po = boost::program_options ;
int main(int argc, char **argv)
{
	std::ifstream file ;
	file.exceptions(std::ifstream::failbit | std::ifstream::badbit) ;
	po::options_description options_ ;

	try
	{
		file.open("test.cfg") ;
		std::cout << "opening test.cfg: failbit: " << file.fail() << " - badbit: " << file.bad() << std::endl ;
		std::cout << "let s call parse_config_file()..." << std::endl ;
		po::parse_config_file(file, options_) ;
	}
	catch(std::ios::failure const & exc)
	{
		std::cout << "ios failure: failbit: " << file.fail() << " - badbit: " << file.bad() << std::endl ;
		std::cout << "perror() value : " << std::flush ;
		perror("test.cfg") ;
	}
}