presented code

bintree.c

@@ -88,10 +88,7 @@ TreeNode *addToTreeRec(TreeNode *currentNode, TreeNode *newNode, CompareFctType
         }
     }
 
-    if (isDuplicate != NULL)
-    {
-        *isDuplicate = 0;
-    }
+
     return currentNode;
 }
  
@@ -110,13 +107,13 @@ void *nextTreeData(TreeNode *root)
     {
         // Add tree to stack so that bigest entry is ontop
         stackRoot       = nextTreeDataRec(root, stackRoot);
-        pointerToReturn = stackRoot;
+        pointerToReturn = top(stackRoot);
     }
     else
     {
         // return current top entry and then pop that top entry
-        pointerToReturn = top(stackRoot);
         stackRoot       = pop(stackRoot);
+        pointerToReturn = top(stackRoot);
     }
 
     

bintreeTests.c

@@ -115,7 +115,7 @@ void test_nextTreeDataReturnsNextDataCorrectly(void)
     // check if nextTreeData returns Data correctly
     TEST_ASSERT_NOT_NULL(entry);
 
-    TEST_ASSERT_EQUAL(score7, *(int *)nextTreeData(NULL));
+    TEST_ASSERT_EQUAL(score7, *(int *)entry);
     TEST_ASSERT_EQUAL(score3, *(int *)nextTreeData(NULL));
     TEST_ASSERT_EQUAL(score6, *(int *)nextTreeData(NULL));
     TEST_ASSERT_EQUAL(score1, *(int *)nextTreeData(NULL));

highscores.txt

@@ -1,3 +1 @@
-àoï
;0
-test;9238
 player1;3999

numbers.c

@@ -31,13 +31,14 @@ static int existsInTree(TreeNode *root, unsigned int value)
     unsigned int *data;
 
     // Traversierung initialisieren
-    nextTreeData(root);
+    data = nextTreeData(root);
 
-    while ((data = nextTreeData(NULL)) != NULL)
+    do    
     {
         if (*data == value)
             return 1;
-    }
+    } while ((data = nextTreeData(NULL)) != NULL);
+
     return 0;
 }