The Open Group Base Specifications Issue 6
IEEE Std 1003.1, 2003 Edition
Copyright © 2001-2003 The IEEE and The Open Group, All Rights reserved.

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

[CX] [Option Start] The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of IEEE Std 1003.1-2001 defers to the ISO C standard. [Option End]

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>

CHANGE HISTORY

First released as a World-wide Portability Interface in Issue 4.

Issue 5

Aligned with ISO/IEC 9899:1990/Amendment 1:1995 (E). Specifically, the type of argument wc is changed from wint_t to wchar_t.

The Optional Header (OH) marking is removed from <stdio.h>.

End of informative text.


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