1VFWSCANF(3P)               POSIX Programmer's Manual              VFWSCANF(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.
10

NAME

12       vfwscanf, vswscanf, vwscanf  —  wide-character  formatted  input  of  a
13       stdarg argument list
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SYNOPSIS

16       #include <stdarg.h>
17       #include <stdio.h>
18       #include <wchar.h>
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20       int vfwscanf(FILE *restrict stream, const wchar_t *restrict format,
21           va_list arg);
22       int vswscanf(const wchar_t *restrict ws, const wchar_t *restrict format,
23           va_list arg);
24       int vwscanf(const wchar_t *restrict format, va_list arg);
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DESCRIPTION

27       The  functionality described on this reference page is aligned with the
28       ISO C standard. Any conflict between the  requirements  described  here
29       and  the  ISO C  standard is unintentional. This volume of POSIX.1‐2017
30       defers to the ISO C standard.
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32       The vfwscanf(), vswscanf(), and vwscanf() functions shall be equivalent
33       to  the  fwscanf(),  swscanf(),  and  wscanf() functions, respectively,
34       except that instead of being called with a  variable  number  of  argu‐
35       ments,  they  are  called  with  an  argument  list  as  defined in the
36       <stdarg.h> header. These functions shall not invoke the  va_end  macro.
37       As  these  functions invoke the va_arg macro, the value of ap after the
38       return is unspecified.
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RETURN VALUE

41       Refer to fwscanf().
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ERRORS

44       Refer to fwscanf().
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46       The following sections are informative.
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EXAMPLES

49       None.
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APPLICATION USAGE

52       Applications using these functions should call va_end(ap) afterwards to
53       clean up.
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RATIONALE

56       None.
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FUTURE DIRECTIONS

59       None.
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SEE ALSO

62       Section 2.5, Standard I/O Streams, fwscanf()
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64       The  Base  Definitions  volume  of POSIX.1‐2017, <stdarg.h>, <stdio.h>,
65       <wchar.h>
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68       Portions of this text are reprinted and reproduced in  electronic  form
69       from  IEEE Std 1003.1-2017, Standard for Information Technology -- Por‐
70       table Operating System Interface (POSIX), The Open Group Base  Specifi‐
71       cations  Issue  7, 2018 Edition, Copyright (C) 2018 by the Institute of
72       Electrical and Electronics Engineers, Inc and The Open Group.   In  the
73       event of any discrepancy between this version and the original IEEE and
74       The Open Group Standard, the original IEEE and The Open Group  Standard
75       is  the  referee document. The original Standard can be obtained online
76       at http://www.opengroup.org/unix/online.html .
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78       Any typographical or formatting errors that appear  in  this  page  are
79       most likely to have been introduced during the conversion of the source
80       files to man page format. To report such errors,  see  https://www.ker‐
81       nel.org/doc/man-pages/reporting_bugs.html .
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85IEEE/The Open Group                  2017                         VFWSCANF(3P)
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