<io.h>

The <io.h> include file defines the following file handle and low-level input and output functions:

access dup isatty remove _tell
chmod dup2 lseek rename umask
_chsize __eof open _setmode unlink
close _filelength read _sopen write
creat        



<sys\stat.h>
<fcntl.h>
<share.h>
<stdio.h>