循环队列函数实现

#pragma once

#include
#include
using namespace std;

#define MAXSIZE 20
typedef int ElemType;

typedef struct Queue
{
	ElemType  *base;
	int       front;
	int        rear;
}Queue;

bool IsEmpty(Queue *q)
{
	return q->front==q->rear;
}

bool IsFull(Queue *q)
{
	return (q->rear+1)%MAXSIZE==q->front;
}

void InitQueue(Queue *q)
{
	q->base=(ElemType *)malloc(sizeof(ElemType)*MAXSIZE);
	assert(q->base!=0);
    q->front=q->rear=0;
}

bool EnQueue(Queue *q, ElemType x)
{
	if(IsFull(q))
	{
		cout<<"队已满"<base[q->rear]=x;
	q->rear=(q->rear+1)%MAXSIZE;
	return true;
}

bool DeQueue(Queue *q, ElemType *v)
{
	if(IsEmpty(q))
	{
		cout<<"队已空，不能出队"<base[q->front];
	q->front=(q->front+1)%MAXSIZE;
    return true;
}

void Show(Queue *q)
{
	for(int i=q->front; i!=q->rear;)
	{
		cout<base[i]<<" ";
		i = (i+1)%MAXSIZE;
	}
	cout<front=q->rear=0;
	free(q->base);
	q->base=NULL;
}

void ClearQueue(Queue *q)
{
    q->front=q->rear;
}

循环队列中控制循环的i不能直接写成i++，要写i=(i+1)%MAXSIZE;