queue.h

// queue.h -- interface for a queue
#ifndef QUEUE_H_
#define QUEUE_H_

class Customer
{
private:
	long arrive;
	int processtime;
public:
	Customer() { arrive = processtime = 0; }
	void set (long when);
	long when() const { return arrive; };
	int ptime() const { return processtime; };
};

typedef Customer Item;

class Queue
{
private:
	struct Node { Item item; struct Node * next; };
	enum {Q_SIZE = 10};
	Node * front;
	Node * rear;
	int items;
	const int qsize;
	Queue (const Queue & q): qsize(0) { }
	Queue & operator= (const Queue & q) { return *this; }
public:
	Queue (int qs = Q_SIZE);
	~Queue();
	bool isempty() const;
	bool isfull() const;
	int queuecount() const;
	bool enqueue (const Item & item);
	bool dequeue (Item & item);
};
#endif