v7 man page for ferror

FERROR(3S)																FERROR(3S)

NAME
       feof, ferror, clearerr, fileno - stream status inquiries

SYNOPSIS
       #include <stdio.h>

       feof(stream)
       FILE *stream;

       ferror(stream)
       FILE *stream

       clearerr(stream)
       FILE *stream

       fileno(stream)
       FILE *stream;

DESCRIPTION
       Feof returns non-zero when end of file is read on the named input stream, otherwise zero.

       Ferror  returns	non-zero  when an error has occurred reading or writing the named stream, otherwise zero.  Unless cleared by clearerr, the
       error indication lasts until the stream is closed.

       Clrerr resets the error indication on the named stream.

       Fileno returns the integer file descriptor associated with the stream, see open(2).

       These functions are implemented as macros; they cannot be redeclared.

SEE ALSO
       fopen(3), open(2)

																	FERROR(3S)