FERROR(3S)              COMMAND REFERENCE              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 nonzero when end-of-file is read on the named
     input stream; otherwise, it is zero.

     Ferror returns nonzero when an error has occurred reading or
     writing the named stream; otherwise, it is 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(3s), and open(2).


















Printed 3/13/89                                                 1

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