+#include <ncurses.h>
+
+#include "constants.h"
+#include "othello.h"
+
+int prompt_values(WINDOW* windows, int base_y, int base_x, const char* msg, int* y, char* x);
+
+int map_col_letter_to_index(char c);
+char map_col_index_to_letter(int index);
+