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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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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  Include:   <io.h>, <errno.h>
 
  Syntax:    long filelength( int handle );
 
  Returns:   the file length in bytes, or -1L if an error occurs.
             errno: EBADF
 
  See also:  chsize, fileno, fstat
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