ferror man page on Ultrix

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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)
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