fputwc - Online Linux Manual PageSection : 3
Updated : 2022-12-15
Source : Linux man-pages 6.03

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NAMEfputwc, putwc − write a wide character to a FILE stream

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LIBRARYStandard C library (libc, −lc)

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SYNOPSIS#include <stdio.h> #include <wchar.h>wint_t fputwc(wchar_t wc, FILE *stream); wint_t putwc(wchar_t wc, FILE *stream);

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DESCRIPTIONThe fputwc() function is the wide-character equivalent of the fputc(3) function. It writes the wide character wc to stream. If ferror(stream) becomes true, it returns WEOF. If a wide-character conversion error occurs, it sets errno to EILSEQ and returns WEOF. Otherwise, it returns wc. The putwc() function or macro functions identically to fputwc(). It may be implemented as a macro, and may evaluate its argument more than once. There is no reason ever to use it. For nonlocking counterparts, see unlocked_stdio(3).

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RETURN VALUEOn success, fputwc() function returns wc. Otherwise, WEOF is returned, and errno is set to indicate the error.

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ERRORSApart from the usual ones, there is EILSEQ  Conversion of wc to the stream's encoding fails.

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ATTRIBUTESFor an explanation of the terms used in this section, see attributes(7). InterfaceAttributeValue fputwc(), putwc() Thread safetyMT-Safe

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STANDARDSPOSIX.1-2001, POSIX.1-2008, C99.

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NOTESThe behavior of fputwc() depends on the LC_CTYPE category of the current locale. In the absence of additional information passed to the fopen(3) call, it is reasonable to expect that fputwc() will actually write the multibyte sequence corresponding to the wide character wc.

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SEE ALSOfgetwc(3), fputws(3), unlocked_stdio(3) 0

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