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──The Microsoft iostream Classes────────────────────────────────────────────
 
  filebuf* attach( filedesc fd );
 
  Parameter   Description
 
  <fd>        A file descriptor as returned by a call to the run-time
              function _open or _sopen. filedesc is a typedef equivalent
              to int.
 
  Remarks
 
  Attaches this filebuf object to the open file specified by <fd>.
 
  Return Value
 
  NULL when the stream is already attached to a file; otherwise it returns
  its own address.
 
 
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