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std::system_error::what

From cppreference.com
< cpp‎ | error‎ | system error
 
 
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virtual const char* what() const noexcept;
(since C++11)

Returns the explanatory string.

[edit] Parameters

(none)

[edit] Return value

Pointer to a null-terminated string with explanatory information.

[edit] See also

returns error code
(public member function) [edit]