//deQueue.c
//John T. Rine
//November 3, 2011

#include"queue.h"
#include<stdio.h>
#include<stdlib.h>

int deQueue(node **head, node **tail)
{
	int data = 0;
	node *temp = NULL;
	//temp = *tail;
	temp = *head;
	if(*head != NULL && *tail != NULL)
	{
		if (temp == *tail)
		{
			temp->prev = NULL;
			temp->next = NULL;
			data = temp->data;
			free(temp);
			*head = *tail = NULL;
		}
		else
		{
			temp->next->prev = NULL;
			*head = temp->next;
			temp->next = NULL;
			data = temp->data;
			free(temp);
		}
	}
	else
	{
		printf("No queue to dequeue...\n");
		exit(1);
	}
	return data;
}