Stubs for basic utilities that I'll need.

src/array.c

+#include <stdlib.h>
+#include "array.c"
+

src/array.h

+typedef struct {
+  size_t length;
+  void *contents;
+} array;
+
+array make_array(size_t);
+void free_array(array);

src/exceptions.c

+#include <stdlib.h>
+#include <stdio.h>
+#include "exceptions.h"
+
+raise(int code) {
+  printf("Aborted with error code %d.", code);
+  abort();
+}
\ No newline at end of file

src/exceptions.h

+raise(int);
\ No newline at end of file