diff --git a/ex2.cpp b/ex2.cpp
index 9cc8068..df805af 100644
--- a/ex2.cpp
+++ b/ex2.cpp
@@ -12,6 +12,9 @@ class Vec
     int LEN;
     int USED;
 
+    void expand();
+
+    void shrink();
 
   public:
 
@@ -34,10 +37,6 @@ class Vec
 
     void swap(int a, int b);
 
-    void expand();
-
-    void shrink();
-
     int insert(int locate,int value);
 
     int del(int locate,int value);