diff --git a/cpp/src/GildedRose.h b/cpp/src/GildedRose.h
index 8464f87b..18a92371 100644
--- a/cpp/src/GildedRose.h
+++ b/cpp/src/GildedRose.h
@@ -9,16 +9,20 @@ public:
     string name;
     int sellIn;
     int quality;
-    Item(string name, int sellIn, int quality) : name(name), sellIn(sellIn), quality(quality) 
+    Item(string name, int sellIn, int quality) : name(name), sellIn(sellIn), quality(quality)
     {}
 };
 
 class GildedRose
 {
 public:
-    vector<Item> & items;
-    GildedRose(vector<Item> & items);
-    
-    void updateQuality();
-};
+    vector<Item>& items;
+    GildedRose(vector<Item>& items);
 
+    void updateQuality();
+    void updateQualityAgedBrie(int index);
+    void updateQualityBackstagePasses(int index);
+    void updateQualityConjured(int index);
+    void updateQualitySulfuras(int index);
+    void updateQualityNormal(int index);
+};