C语言--循环队列实现

#include <stdio.h>
#include <malloc.h>
#include <stdlib.h>
/*
	循环队列
*/

typedef struct Queue
{
	int *p_base;
	int front;
	int rear;
} QUEUE,*PQUEUE;

void init_queue(QUEUE *);//队列初始化

bool en_queue(QUEUE *, int); //加入队列

void traverse_queue(QUEUE *);

bool is_full(QUEUE *);

bool is_empty(QUEUE *);

bool out_queue(QUEUE *, int *);


int main()
{
	QUEUE queue;
	int value;
	init_queue(&queue);
	en_queue(&queue, 1);
	en_queue(&queue, 1);
	en_queue(&queue, 1);
	en_queue(&queue, 1);
	en_queue(&queue, 1);
	traverse_queue(&queue);
	printf("\n");
	out_queue(&queue, &value);
	printf("%d\n", value);
	traverse_queue(&queue);
	return 0;
}

void init_queue(QUEUE *p_queue)
{
	p_queue->p_base = (int *)malloc(sizeof(int) * 6);
	p_queue->front = 0;
	p_queue->rear = 0;

	return;
}

bool en_queue(QUEUE * p_queue, int value)
{
	if (is_full(p_queue))
	{
		return false;
	}
	else
	{
		p_queue->p_base[p_queue->rear] = value;
		p_queue->rear = (p_queue->rear + 1) % 6;
		return true;
	}

}

bool is_full(QUEUE *p_queue)
{
	if ((p_queue->rear + 1) % 6 == p_queue->front)
	{
		return true;
	}
	else
	{
		return false;
	}
}

void traverse_queue(QUEUE *p_queue)
{
	int i = p_queue->front;

	while (i != p_queue->rear)
	{
		printf("%d ", p_queue->p_base[i]);
		i = (i + 1) % 6;
	}
	return;
}

bool is_empty(QUEUE *p_queue)
{
	if (p_queue->front == p_queue->rear)
	{
		return true;
	}
	else
	{
		return false;
	}
}

bool out_queue(QUEUE *p_queue, int *p_value)
{
	if (is_empty(p_queue))
	{
		return false;
	}
	else
	{
		*p_value = p_queue->p_base[p_queue->front];
		p_queue->front = (p_queue->front + 1) % 6;
		return false;
	}
}