ungetwc(3) Library Functions Manual ungetwc(3) ungetwc - FILE C (libc, -lc) #include wint_t ungetwc(wint_t wc, FILE *stream); ungetwc() -- ungetc(3) . stream . wc WEOF, WEOF. wc -- , errno EILSEQ WEOF. wc -- , , , . . . . : wc ; . , ; . ungetwc wc WEOF . attributes(7). +----------------------------+----------------------------------------------------------+--------------------------+ | | | | +----------------------------+----------------------------------------------------------+--------------------------+ |ungetwc() | | MT-Safe | +----------------------------+----------------------------------------------------------+--------------------------+ C11, POSIX.1-2008. POSIX.1-2001, C99. ungetwc() LC_CTYPE . fgetwc(3) () Azamat Hackimov , Dmitriy Ovchinnikov , Dmitry Bolkhovskikh , Katrin Kutepova , Yuri Kozlov ; GNU (GNU General Public License - GPL, 3 ) , - . - , , () () () <>. Linux 6.9.1 2 2024 . ungetwc(3)