1GETWC(3P)                  POSIX Programmer's Manual                 GETWC(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

12       getwc — get a wide character from a stream
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SYNOPSIS

15       #include <stdio.h>
16       #include <wchar.h>
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18       wint_t getwc(FILE *stream);
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DESCRIPTION

21       The functionality described on this reference page is aligned with  the
22       ISO C  standard.  Any  conflict between the requirements described here
23       and the ISO C standard is unintentional. This  volume  of  POSIX.1‐2017
24       defers to the ISO C standard.
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26       The getwc() function shall be equivalent to fgetwc(), except that if it
27       is implemented as a macro it may evaluate stream more than once, so the
28       argument should never be an expression with side-effects.
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RETURN VALUE

31       Refer to fgetwc().
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ERRORS

34       Refer to fgetwc().
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36       The following sections are informative.
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EXAMPLES

39       None.
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APPLICATION USAGE

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

48       None.
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FUTURE DIRECTIONS

51       None.
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SEE ALSO

54       Section 2.5, Standard I/O Streams, fgetwc()
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56       The Base Definitions volume of POSIX.1‐2017, <stdio.h>, <wchar.h>
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59       Portions of this text are reprinted and reproduced in  electronic  form
60       from  IEEE Std 1003.1-2017, Standard for Information Technology -- Por‐
61       table Operating System Interface (POSIX), The Open Group Base  Specifi‐
62       cations  Issue  7, 2018 Edition, Copyright (C) 2018 by the Institute of
63       Electrical and Electronics Engineers, Inc and The Open Group.   In  the
64       event of any discrepancy between this version and the original IEEE and
65       The Open Group Standard, the original IEEE and The Open Group  Standard
66       is  the  referee document. The original Standard can be obtained online
67       at http://www.opengroup.org/unix/online.html .
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69       Any typographical or formatting errors that appear  in  this  page  are
70       most likely to have been introduced during the conversion of the source
71       files to man page format. To report such errors,  see  https://www.ker‐
72       nel.org/doc/man-pages/reporting_bugs.html .
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76IEEE/The Open Group                  2017                            GETWC(3P)
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