qc.hlp (Table of Contents; Topic list)
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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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
_dos_close
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  Include:   <dos.h>, <errno.h>
 
  Syntax:    unsigned _dos_close( int handle );
 
  Returns:   0 if successful, or the DOS error code if not.
             errno: EBADF
 
  See also:  creat, _dos_creat, _dos_creatnew, _dos_open, _dos_read,
             _dos_write, dup, fclose, open
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