#pragma once
//Abstract Class
template <class T>
class Queue {
public:
	virtual ~Queue() = default;
	virtual bool empty() const = 0;
	virtual int size() const = 0;
	virtual T& front() = 0;
	virtual T& back() = 0;
	virtual void pop() = 0;
	virtual void push(const T& theElement) = 0;
};