#include<iostream>     //cout,cin
using namespace std;
#include "LinkQueue.h"

void dispmenu()
{//显示主菜单
	cout << endl;
	cout << "1-初始化链队\n";
	cout << "2-元素入队\n";
	cout << "3-元素出队\n";
	cout << "4-取队头元素\n";
	cout << "5-取队尾元素\n";
	cout << "6-清空队\n";
	cout << "7-测队空\n";
	cout << "8-显示队列元素\n";
	cout << "0-退出\n";
}

char pause;

//主函数
int main()
{
	int e;
	LinkQueue<int> Q;
	system("cls");											// 执行系统命令cls，清屏

	int choice;
	do
	{
		dispmenu();											// 显示主菜单
		cout << "功能选择(1~8，0 退出):";
		cin >> choice;
		switch (choice)
		{
		case 1:											// 初始化链队
			InitQueue(Q);
			cout << endl << "创建成功！" << endl;
			break;
		case 2:										//入队
			cout << "输入要插入的元素值：" << endl;
			cin >> e;
			cout << endl;
			if (EnQueue(Q, e))
			{
				cout << endl << "入队成功！队列元素为：" << endl;
				DispQueue(Q);
			}
			else
				cout << endl << "入队不成功！" << endl;
			break;

		case 3:												// 出队
			if (DeQueue(Q, e))
			{
				cout << endl << "出队成功！出队元素为:" << e << endl;
				cout << endl << "出队后，队列元素为：" << endl;
				DispQueue(Q);
			}
			else
				cout << endl << "队空，出队失败！" << endl;
			break;

		case 4:											// 获取队头元素
			if (GetHead(Q, e))
			{
				cout << "队列元素为：" << endl;
				DispQueue(Q);
				cout << endl << "队头元素为:" << e << endl;
			}
			else
				cout << endl << "队空！" << endl;
			break;
		case 5:											// 获取队尾元素
			if (GetTail(Q, e))
			{
				cout << "队列元素为：" << endl;
				DispQueue(Q);
				cout << endl << "队尾元素为:" << e << endl;

			}
			else
				cout << endl << "队空！" << endl;
			break;
		case 6:											// 清空队
			ClearQueue(Q);
			cout << endl << "队已空!" << endl;
		case 7:											// 测队空
			if (QueueEmpty(Q))
				cout << endl << "空队！" << endl;
			else
				cout << endl << "不是空队！" << endl;
			break;
		case 8:											 // 查看队列元素
			DispQueue(Q);
			cout << endl;
			break;
		case 0:												 // 退出
			DestroyQueue(Q);
			cout << "结束运行Bye-bye!" << endl;
			break;
		default:											// 无效选择
			cout << "无效选择!\n";
			break;
		}
	} while (choice != 0);
	return 0;
}//end of main function