fail state
The flag a stream sets when a read or write did not work.
When extraction cannot produce a value, the stream sets failbit, tests as false, and ignores further reads until you call clear() and discard the bad input.
See also
The flag a stream sets when a read or write did not work.
When extraction cannot produce a value, the stream sets failbit, tests as false, and ignores further reads until you call clear() and discard the bad input.
See also