putwc macro — Writes a wide character
wint_t putwc(wchar_t wc, FILE* stream)
The putwc macro writes the wide character wc. The return value is the character converted to wint_t, or WEOF for an error.
putwc
wc
wint_t
WEOF
fputwc function, putwchar macro, putc in <cstdio>
putc
<cstdio>