Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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  Include:   <stdio.h>, <share.h>
 
  Syntax:    FILE *_fsopen( char *filename, char *mode, int shflag );
             mode:   r, w, a, r+, w+, a+, t, b
                     (appended to <mode> to indicate type)
             shflag: SH_COMPAT, SH_DENYNO, SH_DENYRD, SH_DENYRW,
                     SH_DENYWR
 
  Returns:   a pointer to the stream if successful, or NULL if not.
 
  See also:  fclose, fdopen, ferror, fileno, freopen, open, setmode
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