std::exception::what

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Utilities library

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Diagnostics library

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is_debugger_present (C++26)
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breakpoint (C++26)

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std::exception

Member functions
exception::exception
exception::~exception
exception::operator=
exception::what

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virtualconstchar* what()constthrow();		(until C++11)
virtualconstchar* what()constnoexcept;		(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.

The returned string is encoded with the ordinary literal encoding during constant evaluation.

(since C++26)