The Microsoft Input/Output Stream Classes (iostream.hlp) (Table of Contents; Topic list)
fstream::is_open
◄fstream►                                     ◄Up► ◄Contents► ◄Index► ◄Back►
──The Microsoft iostream Classes────────────────────────────────────────────
 
  int is_open() const;
 
  Remarks
 
  Returns a nonzero value if this stream is attached to an open disk file
  identified by a file descriptor; otherwise 0.
 
  See Also
 
  ◄filebuf::is_open►, ◄fstream::open►, ◄fstream::close►
 
 
                                     -♦-