ungetc            225 usr/include/stdio.h int	 ungetc(int, FILE *);
ungetc            504 usr/lib/libc/stdio/vfscanf.c 					(void) ungetc(*(u_char *)--p, fp);
ungetc            510 usr/lib/libc/stdio/vfscanf.c 				(void) ungetc(c, fp);