1 files changed, 7 insertions, 0 deletions
diff --git a/constant.h b/constant.h
new file mode 100644
index 0000000..1bb6bf4
--- /dev/null
+++ b/constant.h
@@ -0,0 +1,7 @@
+#ifndef __CONSTANT_H
+#define __CONSTANT_H
+
+#define ERROR -1
+#define OK 0
+
+#endif