clearerr(3s) [ultrix man page]

ferror(3s)																ferror(3s)

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

Syntax
       #include <stdio.h>

       feof(stream)
       FILE *stream;

       ferror(stream)
       FILE *stream

       void clearerr(stream)
       FILE *stream

       fileno(stream)
       FILE *stream;

Description
       The  function  returns nonzero when an error has occurred reading or writing the named stream, otherwise zero.  Unless cleared by the error
       indication lasts until the stream is closed.

       The function returns nonzero when end of file is read on the named input stream, otherwise zero.

       The function resets both the error and EOF indicators on the named stream.

       The function returns the integer file descriptor associated with the stream, see

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

See Also
       open(2), fopen(3s)

																	ferror(3s)

ferror(3C)																ferror(3C)

NAME

       ferror, feof, clearerr, fileno - stream status inquiries

SYNOPSIS

       #include <stdio.h>

       int ferror(FILE *stream);

       int feof(FILE *stream);

       void clearerr(FILE *stream);

       int fileno(FILE *stream);

       The  ferror()  function	returns  a  non-zero  value when an error has previously occurred reading from or writing to the named stream (see
       intro(3)). It returns 0 otherwise.

       The feof() function returns a non-zero value when EOF has previously been detected reading the named input stream. It returns 0 otherwise.

       The clearerr() function resets the error indicator and EOF indicator to 0 on the named stream.

       The fileno() function returns the integer file descriptor associated with the named stream; see open(2).

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

       open(2), intro(3), fopen(3C), stdio(3C), attributes(5), standards(5)

								    17 Feb 2005 							ferror(3C)