system_error Class
Represents the base class for all exceptions thrown to report a low-level system overflow.
class system_error : public runtime_error {
public:
explicit system_error(error_code _Errcode, const string& _Message = "");
system_error(error_code _Errcode, const char *_Message);
system_error(error_code::value_type _Errval,
const error_category& _Errcat, const string& _Message);
system_error(error_code::value_type _Errval,
const error_category& _Errcat, const char *_Message);
const error_code& code() const throw();
const error_code& code() const throw();
};
Remarks
The value returned by what in the class exception is constructed from _Message and the stored object of type error_code (either code or error_code(_Errval, _Errcat)).
The member function code returns the stored error_code object.
Requirements
Header: <system_error>
Namespace: std