trusty (3) putwc.3posix.gz

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NAME
       putwc - put a wide character on a stream


SYNOPSIS
       #include <stdio.h>
       #include <wchar.h>

       wint_t putwc(wchar_t wc, FILE *stream);


DESCRIPTION
       The  putwc() function shall be equivalent to fputwc(), except that if it is implemented as a macro it may
       evaluate stream more than once, so the argument should never be an expression with side effects.


RETURN VALUE
       Refer to fputwc() .


ERRORS
       Refer to fputwc() .

       The following sections are informative.


EXAMPLES
       None.


APPLICATION USAGE
       Since it may be implemented  as  a  macro,  putwc()  may  treat  a  stream  argument  with  side  effects
       incorrectly.  In  particular, putwc(wc,*f++) need not work correctly.  Therefore, use of this function is
       not recommended; fputwc() should be used instead.


RATIONALE
       None.


FUTURE DIRECTIONS
       None.


SEE ALSO
       fputwc() , the Base Definitions volume of IEEE Std 1003.1-2001, <stdio.h>, <wchar.h>


       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition,
       Standard  for  Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers,
       Inc  and  The  Open Group. In the event of any discrepancy between this version and the original IEEE and
       The Open Group Standard, the original IEEE and The Open Group  Standard  is  the  referee  document.  The
       original Standard can be obtained online at http://www.opengroup.org/unix/online.html .