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] 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 (“POSIX.1”) defers to the ISO C standard.

The putwc () function shall be equivalent to fputwc(3), 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(3) .

ERRORS

Refer to fputwc(3) .

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(3) should be used instead.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SEE ALSO

fputwc(3) , the Base Definitions volume of IEEE Std 1003.1-2001 (“POSIX.1”), <stdio.h>, <wchar.h>

CHANGE HISTORY

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

Issue 5

Aligned with ISO/IEC 9899/AMD1:1995 (“ISO C90, Amendment 1”) (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>.

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