bsd man page for ferror

FERROR(3S)																FERROR(3S)

NAME
       ferror, feof, 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.  Unless cleared by clearerr, the end-of-file
       indication lasts until the stream is closed.

       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.

       Clearerr resets the error and end-of-file indicators on the named stream.

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

       Currently all of these functions are implemented as macros; they cannot be redeclared.

SEE ALSO
       fopen(3S), open(2)

4th Berkeley Distribution					   May 14, 1986 							FERROR(3S)