Queue

#include "BaseQueue.h"
#include "LinkedList.h"

template <typename ItemType>
class Queue : public BaseQueue<ItemType>, private LinkedList<ItemType>
{
public:
    Queue() :LinkedList<ItemType>() {};
    virtual BaseQueue<ItemType>& enque(const ItemType& item) {
        addInTail(item);
        return *this
    }
    virtual BaseQueue<ItemType>& deque() {
        removeFromHead();
        return *this;
    }
    virtual ItemType& getFirst() {
        return LinkedList<ItemType>::operator[](0);
    }
    virtual ItemType& getLast() {
        return LinkedList<ItemType>::operator[](m_size-1);
    }
    virtual int length() const {
        return size();
    }
    virtual bool isEmpty() const {
        return LinkedList<ItemType>::isEmpty();
    }
    virtual ~Queue() {};
};