trusty (3) getwc.3posix.gz

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NAME
       getwc - get a wide character from a stream


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

       wint_t getwc(FILE *stream);


DESCRIPTION
       The  getwc() function shall be equivalent to fgetwc(), 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 fgetwc() .


ERRORS
       Refer to fgetwc() .

       The following sections are informative.


EXAMPLES
       None.


APPLICATION USAGE
       Since it may be implemented as a macro, getwc()  may  treat  incorrectly  a  stream  argument  with  side
       effects.  In  particular,  getwc(*f++)  does  not  necessarily  work as expected.  Therefore, use of this
       function is not recommended; fgetwc() should be used instead.


RATIONALE
       None.


FUTURE DIRECTIONS
       None.


SEE ALSO
       fgetwc() , 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 .