exposurses

WINDOW *iso_win;
WINDOW *shutter_win;
WINDOW *aperture_win;

void selection(char *name);
void remove_menu(ITEM **items, MENU *men, int n);
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color);
MENU *add_menu(char **array, ITEM **items, int n);
MENU *add_menu(ITEM **items);
WINDOW *add_window(int xpos, char *title);
ITEM **add_item(char **array, int n);
int exposure(int iso);
double shutter(int exposure, double aperture);
double aperture(int exposure, double shutter);
int nearest_match(double x, int menu, int n_array);
double fraction_to_double(char *fraction);
/* No one will ever need more than 9 bytes! */
char exposure_sel[9] = "";

	/* Create items */
	/* Can't really avoid finding array sizes here */
	n_exposure = ARRAY_SIZE(exposure_array);
	n_iso = ARRAY_SIZE(iso_array);
	n_shutter = ARRAY_SIZE(shutter_array);
	n_aperture = ARRAY_SIZE(aperture_array);
	/* http://stackoverflow.com/a/2620158/208793 */
	exposure_items = add_item(exposure_array, n_exposure);
	iso_items = add_item(iso_array, n_iso);
	aperture_items = add_item(aperture_array, n_aperture);
	shutter_items = add_item(shutter_array, n_shutter);
	exposure_menu = add_menu(exposure_array, exposure_items, n_exposure);
	iso_menu = add_menu(iso_array, iso_items, n_iso);
	shutter_menu = add_menu(shutter_array, shutter_items, n_shutter);
	aperture_menu = add_menu(aperture_array, aperture_items, n_aperture);
	exposure_menu = add_menu(exposure_items);
	iso_menu = add_menu(iso_items);
	shutter_menu = add_menu(shutter_items);
	aperture_menu = add_menu(aperture_items);
	exposure_win = add_window(4, "EV");
	iso_win = add_window(45, "ISO");
	shutter_win = add_window(86, "Shutter");
	aperture_win = add_window(127, "Aperture");
	/* Don't know how to avoid the repition below */
	set_menu_win(exposure_menu, exposure_win);
	set_menu_win(iso_menu, iso_win);

	remove_menu(exposure_items, exposure_menu, n_exposure);
	remove_menu(iso_items, iso_menu, n_iso);
	remove_menu(shutter_items, shutter_menu, n_shutter);
	remove_menu(aperture_items, aperture_menu, n_aperture);
	endwin();
}

MENU *add_menu(char **array, ITEM **items, int n) {
ITEM **add_item(char **array, int n) {
	int i;
	MENU *local_menu;
	ITEM **local_items;

	items = (ITEM **)calloc(n, sizeof(ITEM *));
	local_items = (ITEM **)calloc(n, sizeof(ITEM *));
	for(i = 0; i<n; ++i) {
		items[i] = new_item(array[i], array[i]);
		set_item_userptr(items[i], selection);
		local_items[i] = new_item(array[i], array[i]);
		set_item_userptr(local_items[i], selection);
	}
	return local_items;
}

MENU *add_menu(ITEM **items) {
	MENU *local_menu;

	local_menu = new_menu((ITEM **)items);
	set_menu_format(local_menu, 5, 1);
	set_menu_mark(local_menu, " * ");
	return local_menu;
}

WINDOW *add_window(int xpos, char *title) {