Boost C++ Libraries

“...one of the most highly regarded and expertly designed C++ library projects in the world.” — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

Class unknown_option

boost::program_options::unknown_option

class unknown_option : public boost::program_options::error {
public:
  // construct/copy/destruct
  unknown_option(const std::string &);
};

Class thrown when option name is not recognized.

unknown_option(const std::string & name);