NAMEprintw, wprintw, mvprintw, mvwprintw, vwprintw, vw_printw - print formatted output in curses windows
DESCRIPTIONThe printw, wprintw, mvprintw and mvwprintw routines are analogous to printf [see printf(3)]. In effect, the string that would be output by printf is output instead as though waddstr were used on the given window.
The vwprintw and wv_printw routines are analogous to vprintf [see printf(3)] and perform a wprintw using a variable argument list. The third argument is a va_list, a pointer to a list of arguments, as defined in <stdarg.h>.
RETURN VALUERoutines that return an integer return ERR upon failure and OK (SVr4 only specifies "an integer value other than ERR") upon successful completion.
X/Open defines no error conditions. In this implementation, an error may be returned if it cannot allocate enough memory for the buffer used to format the results. It will return an error if the window pointer is null.