2024-05

include/advent_utility.h

@@ -9,13 +9,19 @@
 #define MIN(x, y) (x) < (y) ? (x) : (y)
 
 char *md5_str(const char *);
-
 Vector *string_to_int_vector(const char *input_string, const char *delim);
-
 int int_comp(const void *a, const void *b);
-
 char **get_matches(char *in, char *pat, size_t *sz, size_t max_matches);
-
 void free_matches(char **matches, size_t sz);
 
+enum Direction {
+    DIR_NORTH = 0,
+    DIR_EAST = 1,
+    DIR_SOUTH = 2,
+    DIR_WEST = 3,
+};
+
+void turn_right(enum Direction *d);
+void turn_left(enum Direction *d);
+
 #endif