队列（个人笔记）

队列的创建，增加，删除，判断空满

#include 
#include 
#define ERROR -1
#define N 100
using namespace std;

struct Queue{
	int *data;
	int front,rear;
	int MaxSize;
};

struct BinTree{
	int data;
	struct BinTree *left;
	struct BinTree *right;
};

struct Queue *CreateQueue(int Maxsize)
{
	struct Queue *Q = (struct Queue *)malloc(sizeof(struct Queue));
	Q->data = (int *)malloc(sizeof(int));
	Q->front = Q->rear = 0;
	Q->MaxSize = Maxsize;
	return Q;
}

bool Isfull(struct Queue *Q)
{
	return ((Q->rear+1) % Q->MaxSize == Q->front);
}

bool AddQ(struct Queue *Q,int x)
{
	if(Isfull(Q))
	{
		cout << "队列已满" << endl;
		return false;
	}
	else
	{
		Q->rear = (Q->rear+1) % Q->MaxSize;
		Q->data[Q->rear] = x;
		return true;
	}
}

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

int DeleteQ(struct Queue *Q)
{
	if(IsEmpty(Q))
	{
		cout << "队列为空" << endl;
		return ERROR;
	}
	else
	{
		Q->front = (Q->front+1) % Q->MaxSize;
		return Q->data[Q->front];
	}
}

int main()
{
	int n,x;
	struct Queue *Q = CreateQueue(N);
	cout << "请输入数据个数";
	cin >> n;
	while(n--)
	{
		cin >> x;
		AddQ(Q,x);
	}
	//cout << Q->front << " " << Q->rear << endl;
	for(int i = Q->front;i != Q->rear+1;i = (i+1)%Q->MaxSize)
	{
		cout << Q->data[i] << " ";
	}
	
	return 0;
}