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@(#)ferror.3 6.4 (Berkeley) 04/01/89

C 4 ferror, feof, clearerr, fileno - stream status inquiries #include <stdio.h>

feof(stream)

FILE *stream;

ferror(stream)

FILE *stream

clearerr(stream)

FILE *stream

fileno(stream)

FILE *stream;

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.

open(2), fopen(3)