NAME
clearerr, feof, ferror, fileno - check and reset stream
status
SYNOPSIS
#include <stdio.h>
void clearerr( FILE *stream));
int feof( FILE *stream));
int ferror( FILE *stream));
int fileno( FILE *stream));
DESCRIPTION
The function clearerr clears the end-of-file and error indi-
cators for the stream pointed to by stream.
The function feof tests the end-of-file indicator for the
stream pointed to by stream, returning non-zero if it is
set. The end-of-file indicator can only be cleared by the
function clearerr.
The function ferror tests the error indicator for the stream
pointed to by stream, returning non-zero if it is set. The
error indicator can only be reset by the clearerr function.
The function fileno examines the argument stream and returns
its integer descriptor.
ERRORS
These functions should not fail and do not set the external
variable errno.
SEE ALSO
open(2), stdio(3)
STANDARDS
The functions clearerr, feof, and ferror conform to C3.159-
1989 (``ANSI C'').