CircleList/CircleList.h

#include "List/List.h"
#include <iostream>

template <typename T>
class CircleList: public List
{
    public:
    Node<T>* get_start() {
        return start;
    }

    void add(T value) {
        Node<T>* node = new Node<T>;
        node->value = value;
        if(start==nullptr) {
            start = node;
            end = node;
            return;
        }
        node->prev = end;
        node->next = start;
        end = node;
        lenght++;
    }

    void pop() {
        end->prev->next = start;
        end = end->prev;
        lenght--;
    }

    friend std::ostream &operator <<(std::ostream &os, CircleList &c)
    {
        os << "( ";
        Node<T>* currentNode = c.start;
        while (currentNode->next!=nullptr)
        {
            os << currentNode->value << " = ";
            currentNode = currentNode->next;
        }
        os << currentNode->value << " )";
        return os;
    }

};