#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-测队空\n";
	cout<<"7-显示队列元素\n";
	cout<<"8-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<<"Enter choice(1~8):";
		cin>>choice;
		switch(choice)
		{
			case 1://初始化链队
				InitQueue(Q);
				cout<<endl<<"创建成功！"<<endl;
				break;
		     case 2://入栈
                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！"<<endl;
                else
					 cout<<endl<<"入队不成功！"<<endl;
				break;

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

			 case 4://获取队头元素
				if(GetHead(Q,e))
                 {
                     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<<endl<<"队尾元素为:"<<e<<endl;
                 }
				 else
					 cout<<endl<<"队空！"<<endl;
				 break;
			 case 6://测队空
                 if(QueueEmpty(Q))
					 cout<<endl<<"空队！"<<endl;
				 else
					 cout<<endl<<"不是空队！"<<endl;
				 break;
			 case 7: //显示栈元素
				 DispQueue(Q);
                 cout<<endl;
				 cin.get(pause);
				 system("pause");
				 break;
  			case 8://退出
                DestroyQueue(Q);
				cout<<"结束运行"<<endl;
                break;
			default://非法选择
				cout<<"Invalid choice\n";
				break;
			}
	}while(choice!=8);
	return 0;
}//end of main function