--- /dev/null
+#ifndef __STRING_NIT_H
+#define __STRING_NIT_H
+#include <stdio.h>
+#include <stdlib.h>
+/* This file is part of NIT ( http://www.nitlanguage.org ).
+ *
+ * This file is free software, which comes along with NIT. This software is
+ * distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. You can modify it is you want, provided this header
+ * is kept unaltered, and a notification of the changes is added.
+ * You are allowed to redistribute it and sell it, alone or is a part of
+ * another product.
+ */
+
+char* native_int_to_s(int recv, int len);
+
+#endif