write the definition for the following functions in c++ format

#ifndef MOVIETREE_HPP #define MOVIETREE_HPP #include struct MovieNode { int ranking; std::string title; int year; int quantity; MovieNode *parent; MovieNode *leftChild; MovieNode *rightChild; MovieNode(){}; MovieNode(int in_ranking, std::string in_title, int in_year, int in_quantity) { ranking = in_ranking; title = in_title; year = in_year; quantity = in_quantity; parent = leftChild = rightChild = nullptr; } }; class MovieTree { public: MovieTree(); ~MovieTree(); void printMovieInventory(); void addMovieNode(int ranking, std::string title, int releaseYear, int quantity);

void findMovie(std::string title); void rentMovie(std::string title); void deleteMovie(std::string title); void countMovies(); private: MovieNode *search(MovieNode *node, std::string title); MovieNode *root; }; #endif // MOVIETREE_HPP