std::exception::what

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virtual const char* what() const;

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] Exceptions

(none) (until C++11)
noexcept specification:  
noexcept
  
(since C++11)