diff --git a/highscores.txt b/highscores.txt
index 69c79be..058b28c 100644
--- a/highscores.txt
+++ b/highscores.txt
@@ -1,5 +1,9 @@
+Max02.12;19860
 max;19374
+Max02.12;11910
 kristin;9935
+Max02.12;7966
 player_name;7961
 max;5989
+Max02.12;4988
 player1;3999
diff --git a/stack.h b/stack.h
index f7d542d..6d5dce9 100644
--- a/stack.h
+++ b/stack.h
@@ -9,6 +9,15 @@ The latest element is taken from the stack. */
 
 //TODO: passenden Datentyp als struct anlegen
 
+typedef struct StackNode {
+
+  void *data;
+  struct StackNode *next;
+
+} StackNode;
+
+StackNode *createNode(void *data);
+
 // Pushes data as pointer onto the stack.
 StackNode *push(StackNode *stack, void *data);