add to tree wip

bintree.c

@@ -12,7 +12,39 @@
 // 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 *node = malloc(sizeof(data));
+        strcpy(root, data);
+        node->left = NULL;
+        node->right = NULL;
 
+        if (isDuplicate != NULL)
+        {
+            isDuplicate = 0;
+        }
+    }
+    return node;
+
+    int compare = compareFct(data, root->data);
+
+    if (compare < 0) // linker Teilbaum
+    {
+        root->left = addToTree();
+    }
+    else if (compare > 0) // rechter Teilbaum
+    {
+        root->right = addToTree();
+    }
+    else
+    {
+        if (isDuplicate != NULL)
+        {
+            isDuplicate = 1;
+        }
+        return root;
+    }
+    return root;
 }
 
 // Iterates over the tree given by root. Follows the usage of strtok. If tree is NULL, the next entry of the last tree given is returned in ordering direction.
@@ -20,17 +52,14 @@ 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)
 {
-
 }
 
 // Releases all memory resources (including data copies).
 void clearTree(TreeNode *root)
 {
-
 }
 
 // Returns the number of entries in the tree given by root.
 unsigned int treeSize(const TreeNode *root)
 {
-
 }