The Microsoft Input/Output Stream Classes (iostream.hlp) (Table of Contents; Topic list)
ifstream::open
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──The Microsoft iostream Classes────────────────────────────────────────────
 
  void open( const char* szName, int nMode = ios::in,
             int nProt = filebuf::openprot );
 
  Parameter   Description
 
  <szName>    The name of the file to be opened during construction.
 
  <nMode>     An integer containing bits defined as ios enumerators that
              can be combined with the OR (|) operator. See the
              ◄ifstream constructor► for a list of the enumerators. The
              ios::in mode is implied.
 
  <nProt>     The file protection specification; defaults to the static
              integer filebuf::openprot. See the ◄ifstream constructor►
              for a list of the other allowed values.
 
  Remarks
 
  Opens a disk file and attaches it to the stream's filebuf object. If the
  filebuf object is already attached to an open file, or if a filebuf call
  fails, the ios::failbit is set. If the file is not found, then the
  ios::failbit is set only if the ios::nocreate mode was used.
 
  See Also
 
  ◄filebuf::open►, ◄ifstream::ifstream►, ◄ifstream::close►,
  ◄ifstream::is_open►
 
 
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