-#ifndef __GW_H_\r
-#define __GW_H_\r
-\r
-int start_GW();\r
-int end_GW();\r
-\r
+#ifndef __GW_H_
+#define __GW_H_
+
+extern unsigned long int total_1, total_2, succ_1, succ_2, err_1, err_2;
+
+int start_GW();
+int end_GW();
+
#endif
\ No newline at end of file