bintree.c

@@ -2,7 +2,6 @@
 #include "stack.h"
 #include "bintree.h"
 
-static StackNode *stack;
 // TODO: binären Suchbaum implementieren
 /*  * `addToTree`: fügt ein neues Element in den Baum ein (rekursiv),
  * `clearTree`: gibt den gesamten Baum frei (rekursiv),
@@ -13,23 +12,25 @@ static StackNode *stack;
 // if isDuplicate is NULL, otherwise ignores duplicates and sets isDuplicate to 1 (or to 0 if a new entry is added).
 TreeNode *addToTree(TreeNode *root, const void *data, size_t dataSize, CompareFctType compareFct, int *isDuplicate)
 {
-    if (root == NULL)
+    TreeNode newNode = {data, NULL, NULL};
+    
+
+    if(root == NULL)
     {
-        TreeNode *newNode = malloc(sizeof(TreeNode));
-        newNode->data = malloc(dataSize);
-        newNode->data = data;
-        newNode->left = NULL;
-        newNode->right = NULL;
-        return newNode;
+        return &newNode;
     }
-    if (compareFct(root->data, data) < 0)
+
+    if (data < root->data)
     {
-        root->left = addToTree(root->left, data, dataSize, compareFct, isDuplicate);
+        root->left = addToTree(root->left, data, dataSize,compareFct, isDuplicate);
     }
-    else if (compareFct(root->data, data) > 0)
+    else if(data > root->data)
     {
-        root->right = addToTree(root->right, data, dataSize, compareFct, isDuplicate);
+       root->right = addToTree(root->right, data, dataSize,compareFct, isDuplicate);
     }
+
+
+
     return root;
 }
 
@@ -38,11 +39,9 @@ TreeNode *addToTree(TreeNode *root, const void *data, size_t dataSize, CompareFc
 // push the top node and push all its left nodes.
 void *nextTreeData(TreeNode *root)
 {
-    return NULL;
 
 }
 
-
 // Releases all memory resources (including data copies).
 void clearTree(TreeNode *root)
 {
@@ -50,7 +49,7 @@ void clearTree(TreeNode *root)
     {
         return;
     }
-
+    
     if (root->left != NULL)
     {
         clearTree(root->left);

stack.c

@@ -13,7 +13,7 @@ StackNode *push(StackNode *stack, void *data)
     StackNode *tempNode, *newNode;
 
     newNode = malloc(sizeof(StackNode));
-    newNode->value = data;
+    newNode->value = *(int *)data;
     newNode->next = NULL;
 
     if (stack == NULL)

stack.h

@@ -9,7 +9,7 @@ The latest element is taken from the stack. */
 
 //TODO: passenden Datentyp als struct anlegen
 typedef struct Node {
-    void *value;
+    int value;
     struct Node* next;
 } StackNode;
 

test_stack.c

@@ -25,7 +25,7 @@ void test_push(void)
     TEST_ASSERT_EQUAL_INT(2, testNode->next->value);
 }
 
-StackNode* setup(void *value, StackNode* next) {
+StackNode* setup(int value, StackNode* next) {
     StackNode* node = malloc(sizeof(StackNode)); // allocate memory on heap
     if (node == NULL) {
         perror("malloc failed");