Update Lab7

Lab7/treenode.cpp

@@ -0,0 +1,55 @@
+#include "treenode.h"
+
+TreeNode::TreeNode(int data)
+{
+    this->data = data;
+}
+
+TreeNode::~TreeNode()
+{
+    this->data = 0;
+    this->left = nullptr;
+    this->right = nullptr;
+}
+
+
+int TreeNode::getData()
+{
+    return this->data;
+}
+
+void TreeNode::setData(int newData)
+{
+    this->data = newData;
+}
+
+TreeNode *TreeNode::getLeft()
+{
+    return this->left;
+}
+
+void TreeNode::setLeft(TreeNode *newLeft)
+{
+    this->left = newLeft;
+}
+
+TreeNode *TreeNode::getRight()
+{
+    return this->right;
+}
+
+void TreeNode::setRight(TreeNode *newRight)
+{
+    this->right = newRight;
+}
+
+void TreeNode::print()
+{
+    cout << "(";
+    if (this->left != nullptr)
+        this->left->print();
+    cout << this->data;
+    if (this->right != nullptr)
+        this->right->print();
+    cout << ")";
+}