diff --git a/doble_initial.exe b/doble_initial.exe
new file mode 100644
index 0000000..1162fb9
Binary files /dev/null and b/doble_initial.exe differ
diff --git a/highscores.txt b/highscores.txt
index 4edd5a7..0edaa84 100644
--- a/highscores.txt
+++ b/highscores.txt
@@ -1 +1,2 @@
+Silvana;9944
 player1;3999
diff --git a/stack.h b/stack.h
index f7d542d..a2b8a17 100644
--- a/stack.h
+++ b/stack.h
@@ -8,6 +8,11 @@ The latest element is taken from the stack. */
 #include <stdlib.h>
 
 //TODO: passenden Datentyp als struct anlegen
+typedef{
+  int* data;
+  unsigned int *fol;
+  unsigned int *prev;
+  }StackNode;
 
 // Pushes data as pointer onto the stack.
 StackNode *push(StackNode *stack, void *data);