diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
new file mode 100644
index 0000000..cb8d469
--- /dev/null
+++ b/.vscode/c_cpp_properties.json
@@ -0,0 +1,18 @@
+{
+  "configurations": [
+    {
+      "name": "windows-gcc-x64",
+      "includePath": [
+        "${workspaceFolder}/**"
+      ],
+      "compilerPath": "C:/ProgramData/mingw64/mingw64/bin/gcc.exe",
+      "cStandard": "${default}",
+      "cppStandard": "${default}",
+      "intelliSenseMode": "windows-gcc-x64",
+      "compilerArgs": [
+        ""
+      ]
+    }
+  ],
+  "version": 4
+}
\ No newline at end of file
diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 0000000..209cd35
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,24 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "C/C++ Runner: Debug Session",
+      "type": "cppdbg",
+      "request": "launch",
+      "args": [],
+      "stopAtEntry": false,
+      "externalConsole": true,
+      "cwd": "e:/Informatik/Drittes Projekt/DobleSpiel",
+      "program": "e:/Informatik/Drittes Projekt/DobleSpiel/build/Debug/outDebug",
+      "MIMode": "gdb",
+      "miDebuggerPath": "gdb",
+      "setupCommands": [
+        {
+          "description": "Enable pretty-printing for gdb",
+          "text": "-enable-pretty-printing",
+          "ignoreFailures": true
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..bb879da
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,59 @@
+{
+  "C_Cpp_Runner.cCompilerPath": "gcc",
+  "C_Cpp_Runner.cppCompilerPath": "g++",
+  "C_Cpp_Runner.debuggerPath": "gdb",
+  "C_Cpp_Runner.cStandard": "",
+  "C_Cpp_Runner.cppStandard": "",
+  "C_Cpp_Runner.msvcBatchPath": "C:/Program Files/Microsoft Visual Studio/VR_NR/Community/VC/Auxiliary/Build/vcvarsall.bat",
+  "C_Cpp_Runner.useMsvc": false,
+  "C_Cpp_Runner.warnings": [
+    "-Wall",
+    "-Wextra",
+    "-Wpedantic",
+    "-Wshadow",
+    "-Wformat=2",
+    "-Wcast-align",
+    "-Wconversion",
+    "-Wsign-conversion",
+    "-Wnull-dereference"
+  ],
+  "C_Cpp_Runner.msvcWarnings": [
+    "/W4",
+    "/permissive-",
+    "/w14242",
+    "/w14287",
+    "/w14296",
+    "/w14311",
+    "/w14826",
+    "/w44062",
+    "/w44242",
+    "/w14905",
+    "/w14906",
+    "/w14263",
+    "/w44265",
+    "/w14928"
+  ],
+  "C_Cpp_Runner.enableWarnings": true,
+  "C_Cpp_Runner.warningsAsError": false,
+  "C_Cpp_Runner.compilerArgs": [],
+  "C_Cpp_Runner.linkerArgs": [],
+  "C_Cpp_Runner.includePaths": [],
+  "C_Cpp_Runner.includeSearch": [
+    "*",
+    "**/*"
+  ],
+  "C_Cpp_Runner.excludeSearch": [
+    "**/build",
+    "**/build/**",
+    "**/.*",
+    "**/.*/**",
+    "**/.vscode",
+    "**/.vscode/**"
+  ],
+  "C_Cpp_Runner.useAddressSanitizer": false,
+  "C_Cpp_Runner.useUndefinedSanitizer": false,
+  "C_Cpp_Runner.useLeakSanitizer": false,
+  "C_Cpp_Runner.showCompilationTime": false,
+  "C_Cpp_Runner.useLinkTimeOptimization": false,
+  "C_Cpp_Runner.msvcSecureNoWarnings": false
+}
\ No newline at end of file
diff --git a/bintree.c b/bintree.c
index 5cf82a9..b1889f0 100644
--- a/bintree.c
+++ b/bintree.c
@@ -8,10 +8,60 @@
     * `treeSize`: zählt die Knoten im Baum (rekursiv),
     * `nextTreeData`: Traversierung mit Hilfe des zuvor implementierten Stacks. */
 
+
+    static StackNode *stack = NULL; 
+
+TreeNode* createNode (const void* data, size_t dataSize){
+
+	TreeNode* newNode = (TreeNode*)malloc(sizeof(TreeNode));
+	if (newNode == NULL){
+		// Fehlerbehandlung
+		return NULL; 
+	}
+
+	newNode->data = malloc(dataSize); 
+	if(newNode->data == NULL){
+		free(newNode); // newNode freigeben
+		return NULL;
+	}
+
+	memcpy (newNode->data, data, dataSize); 
+
+	newNode->left = NULL;
+	newNode->right = NULL; 
+	return newNode; 
+}
+
 // Adds a copy of data's pointer destination to the tree using compareFct for ordering. Accepts duplicates
 // 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 = createNode(data,dataSize);
+		if (isDuplicate != NULL)
+			*isDuplicate = 0;
+
+		return newNode;
+	}
+	if (compareFct(root->data, data)==0)
+	{
+		if (isDuplicate != NULL) {
+			*isDuplicate=1;
+			return root;
+		}
+		TreeNode *newNode = createNode(data,dataSize);
+		return newNode;
+	}
+	else if (compareFct(root->data, data)>0)
+	{
+		root->left = addToTree(root->left, data, dataSize, compareFct, isDuplicate);
+	}
+	else if (compareFct(root->data, data)<0)
+	{
+		root->right= addToTree(root->right, data, dataSize, compareFct, isDuplicate);
+	}
+	return root;
 
 }
 
@@ -20,17 +70,45 @@ 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)
 {
+    if (root != NULL) {
+		clearStack(stack);
+		stack = NULL;
+	}
 
 }
 
 // Releases all memory resources (including data copies).
 void clearTree(TreeNode *root)
 {
+    if (root != NULL) {
+		if (root->left != NULL) {
+			clearTree(root->left);
+		}
+		if (root->right != NULL) {
+			clearTree(root->right);
+		}
+		free(root->data);
+		free(root);
+	}
 
 }
 
 // Returns the number of entries in the tree given by root.
 unsigned int treeSize(const TreeNode *root)
 {
+    unsigned int size = 0;
+		if (root == NULL) {
+			return 0;
+		}
+
+		if (root->left != NULL)
+		{
+			size += treeSize(root->left);
+		}
+		if (root->right != NULL)
+		{
+			size += treeSize(root->right);
+		}
+		return size+1;
 
 }
\ No newline at end of file
diff --git a/doble_initial.exe b/doble_initial.exe
new file mode 100644
index 0000000..c56ffd8
Binary files /dev/null and b/doble_initial.exe differ
diff --git a/highscores.txt b/highscores.txt
index 4edd5a7..1cf0460 100644
--- a/highscores.txt
+++ b/highscores.txt
@@ -1 +1,4 @@
+Moritz1;9970
+Moritz;9954
+Moritz;4986
 player1;3999
diff --git a/main.o b/main.o
new file mode 100644
index 0000000..a5219de
Binary files /dev/null and b/main.o differ
diff --git a/stack.h b/stack.h
index f7d542d..0465503 100644
--- a/stack.h
+++ b/stack.h
@@ -9,6 +9,10 @@ The latest element is taken from the stack. */
 
 //TODO: passenden Datentyp als struct anlegen
 
+typedef struct{
+    void *data;
+}StackNode; 
+
 // Pushes data as pointer onto the stack.
 StackNode *push(StackNode *stack, void *data);
 
diff --git a/stack.o b/stack.o
new file mode 100644
index 0000000..7954125
Binary files /dev/null and b/stack.o differ