std::error_code::message(3)

NAME
std::error_code::message - std::error_code::message

Synopsis
   std::string message() const; (since C++11)
   Returns the message corresponding to the current error code value and category.
   Equivalent to category().message(value()).

Parameters
   (none)

Return value
   The error message corresponding to the current error code value and category.

Exceptions
   May throw implementation-defined exceptions.