#ifndef QUEUE_H
#define QUEUE_H

#include <stdbool.h>

typedef struct _queue_node {
  int data;
  struct _queue_node *next;
} QueueNode;

typedef struct {
  QueueNode *front;
  QueueNode *rear;
} Queue;

Queue *queue_create(void);
void queue_destroy(Queue *q);

bool queue_enqueue(Queue *q, int data);
bool queue_dequeue(Queue *q, int *data);

bool queue_front(Queue *q, int *data);
bool queue_is_empty(Queue *q);
int queue_size(Queue *q);

void queue_print(Queue *q);

#endif