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    bool stream::bad();

The bad() function returns true if a fatal error with the current stream has occurred, false otherwise.

Note: fatal errors do not normally occur. Even a failure to open a file is not a fatal error.

Related Topics: clear, eof, exceptions, fail, good, rdstate

Stream states:

  • if (s): The previous operation was successful (a shorthand for !
  • if ( The previous operation failed.
  • if (s.eof()): Reading past the end has been attempted.
  • if (s.bad()): Stream state is undefined; the stream can no longer be used.
  • if (s.good()): None of bad/eof/fail are set.
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