class SmartList {
private:
	struct Node {
		AppliancePtr app;
		Node* next;
	};

	Node* head;
	Node* cur;

public:
	SmartList(){
		head = NULL;
		cur = NULL;
	}

	void addNode(AppliancePtr newApp) {
		Node* newNode = new Node();
		newNode->app = newApp;
		newNode->next = NULL;

		if (head != NULL) {
			cur = head;

			while (cur->next != NULL) {
				cur = cur->next;
			}

			cur->next = newNode;
		}
		else {
			head = newNode;
		}
	}
};