AT&T UNIX™PC Unix System V Users Manual - tenox

FERROR (3S) FERROR (3S)
NAME
ferror, feof, clearerr, fileno - stream status inquiries
SYNOPSIS
#include
int feof (stream)
FILE
*stream;
int ferror (stream)
FILE
*stream;
void clearerr (stream)
FILE
*stream;
int fileno(stream)
FILE
*stream;
DESCRIPTION
Feof returns non-zero when EOF has previously been detected
reading the named input stream , otherwise zero.
Ferror returns non-zero when an 1/0 error has previously
occurred reading from or writing to the named stream, otherwise
zero.
Clearerr resets the error indicator and EOF indicator to zero on
the named stream.
Fileno returns the integer file descriptor associated with the
named stream ; see open(2).
NOTE
All these functions are implemented as macros; they cannot be
declared or redeclared.
SEE ALSO
open(2), fopen(3S).
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