// TreeNode.h: TreeNode class definition // CS 2150: Lab 5 #ifndef TREENODE_H #define TREENODE_H #include <string> using namespace std; class TreeNode { public: TreeNode(); // Default Constructor TreeNode(const string& val); // Constructor private: string value; TreeNode* left; TreeNode* right; friend class TreeCalc; // gives TreeCalc access to private data }; #endif