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Showing content from https://en.cppreference.com/w/cpp/language/../../cpp/../cpp/../cpp/../cpp/../c/io/putwchar.html below:

putwchar - cppreference.com

wint_t putwchar( wchar_t ch );

Writes a wide character ch to stdout.

ch on success, WEOF on failure.

#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <wchar.h>
 
int main()
{
    setlocale(LC_ALL, "en_US.utf8");
 
    const wchar_t data[] =
    {
        L'\u2200', // Unicode name: "FOR ALL"
        L'∀',
        L'\n',
    };
 
    for (size_t t = 0; t != (sizeof data / sizeof(wchar_t)); ++t)
    {
        if (putwchar(data[t]) == WEOF)
        {
            puts("I/O error in putwchar");
            return EXIT_FAILURE;
        }
    }
 
    return EXIT_SUCCESS;
}

Possible output:

• C23 standard (ISO/IEC 9899:2024):

• 7.31.3.9 The putwchar function (p: TBD)

• C17 standard (ISO/IEC 9899:2018):

• 7.29.3.9 The putwchar function (p: 310)

• C11 standard (ISO/IEC 9899:2011):

• 7.29.3.9 The putwchar function (p: 425)

• C99 standard (ISO/IEC 9899:1999):

• 7.24.3.9 The putwchar function (p: 370)

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