define vars at start of function

src/main.c

@@ -1,11 +1,15 @@
-#include "main.h"
+#include <stdlib.h>
+
 #include "args.h"
 #include "generator.h"
+#include "main.h"
 #include "types.h"
 
 int main(int argc, char **argv) {
   Parameters params;
+
   params = args_parse(argc, argv);
   generator_run(params);
-  return 0;
+
+  return EXIT_SUCCESS;
 }