std::exception::what - cppreference.com (original) (raw)

| virtual const char* what() const throw(); | | (until C++11) | | ------------------------------------------- | | ------------------------------------- | | virtual const char* what() const noexcept; | | (since C++11) (constexpr since C++26) |

Returns the explanatory string.

[edit] Parameters

(none)

[edit] Return value

Pointer to a null-terminated string with explanatory information. The pointer is guaranteed to be valid at least until the exception object from which it is obtained is destroyed, or until a non-const member function on the exception object is called.

[edit] Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.