refactor includes

src/main.c

@@ -1,8 +1,9 @@
 #include "args.h"
 #include "generator.h"
+#include "types.h"
 
 int main(int argc, char **argv) {
-  parameters params;
+  Parameters params;
   params = parse_args(argc, argv);
   generate(params);
   return 0;