ungetwc - push wchar_t character back into input stream
wint_t ungetwc(wchar_t c<b>, FILE *stream<b>);
DESCRIPTION (International Functions) [Toc] [Back]
ungetwc inserts the wchar_t character c into the buffer associated with
the input stream. That character, c, will be returned by the next getwc
call on that stream. ungetwc returns c.
One character of pushback is guaranteed, provided something has already
been read from the stream and the stream is actually buffered.
If c equals (wchar_t)EOF, ungetwc does nothing to the buffer and returns
fseek erases all memory of inserted characters.
fseek(3S), setbuf(3S), stdio(3S), getwc(3S), widec(3S).
ungetwc returns WEOF if it cannot insert a wchar_t character.
PPPPaaaaggggeeee 1111 [ Back ]