NAME

       std::exception - Base class for all library exceptions.

SYNOPSIS

       #include <exception.h>

       Inherited by __gnu_cxx::__concurrence_broadcast_error,
       __gnu_cxx::__concurrence_lock_error, __gnu_cxx::__concurrence_unlock_error,
       __gnu_cxx::__concurrence_wait_error, __gnu_cxx::forced_error, std::bad_alloc,
       std::bad_cast, std::bad_exception, std::bad_function_call, std::bad_optional_access,
       std::bad_typeid, std::bad_variant_access, std::bad_weak_ptr, std::ios_base::failure,
       std::logic_error, and std::runtime_error.

   Public Member Functions
       exception (const exception &)=default
       exception (exception &&)=default
       exception & operator= (const exception &)=default
       exception & operator= (exception &&)=default
       virtual const char * what () const noexcept

Detailed Description

       Base class for all library exceptions.

       This is the base class for all exceptions thrown by the standard library, and by certain
       language expressions. You are free to derive your own exception classes, or use a
       different hierarchy, or to throw non-class data (e.g., fundamental types).

Member Function Documentation

   virtual const char * std::exception::what () const [virtual],  [noexcept]
       Returns a C-style character string describing the general cause of the current error.

       Reimplemented in std::ios_base::failure, std::bad_alloc, std::bad_any_cast,
       std::filesystem::filesystem_error, std::bad_weak_ptr, std::bad_function_call,
       std::experimental::fundamentals_v1::bad_any_cast,
       std::experimental::filesystem::v1::filesystem_error, std::future_error, std::logic_error,
       std::runtime_error, std::bad_exception, std::bad_cast, std::bad_typeid, and
       std::bad_optional_access.

Author

       Generated automatically by Doxygen for libstdc++ from the source code.

                                            libstdc++                        std::exception(3cxx)