ios_base::iostate

The type of constants that describe the state of a stream.

namespace std {
   class ios_base {
   public:
      typedef implementation-defined-bitmask-type iostate;
      static const iostate badbit;
      static const iostate eofbit;
      static const iostate failbit;
      static const iostate goodbit;
      ...
   };
}

Remarks

The type is a bitmask type that describes an object that can store stream state information. The distinct flag values (elements) are:

• badbit, to record a loss of integrity of the stream buffer.

• eofbit, to record end-of-file while extracting from a stream.

• failbit, to record a failure to extract a valid field from a stream.

In addition, a useful value is goodbit, where none of the previously mentioned bits are set (goodbit is guaranteed to be zero).

Requirements

Header: <ios>

Namespace: std

See Also

Reference

ios_base Class

iostream Programming

iostreams Conventions

Other Resources

ios_base Members