#include<iostream>
using namespace std;
const int QueueSize=100;
class CirQueue
{
public:
CirQueue()
{
front=rear=QueueSize-1;
}
~CirQueue(){}
void EnQueue(char *x);
char * DeQueue(); // 
char * GetQueue(); //
int Empty()
{
int w;
front==rear?w=1:w=0;
return w;
}
private:
char data[QueueSize][20]; //
int front,rear;
};


void CirQueue::EnQueue(char *x)
{
if((rear+1)%QueueSize==front)throw"上溢";
rear=(rear+1)%QueueSize;
int i=0;
while(*x!='\0') //
{
data[rear][i]=*x;
i++,x++;
}
data[rear][i]='\0';
cout<<data[rear]; //c语言里的输出函数 c++就不知道了 
}


char *CirQueue::DeQueue()//
{
if(rear==front)throw"下溢";
front=(front+1)%QueueSize;
return data[front];
}


char *CirQueue::GetQueue()//
{
int i;
if(rear==front)throw"";
i=(front+1)%QueueSize;
return data[i];
}


int main()
{
CirQueue C;
cout<<"******************"<<endl;
cout<<"      打饭系统"<<endl;
cout<<"******************"<<endl;
cout<<endl;
cout<<"@队列的属性为："<<endl;
if(C.Empty())
cout<<"队列非空"<<endl;
else
cout<<"队列为空"<<endl;
cout<<endl;
cout<<"@明明，可可，骏骏到同一条队伍排队进行打饭"<<endl;
char a[20]="明明",b[20]="可可",c[20]="骏骏";
C.EnQueue(a);
cout<<endl;
C.EnQueue(b);
cout<<endl;
C.EnQueue(c);
cout<<endl;
cout<<endl;
cout<<"@此时排在队伍最前面的是："<<endl;
cout<<C.GetQueue()<<endl;
cout<<endl;
cout<<"@最前面的同学打完一次饭后："<<endl;
C.DeQueue();
cout<<endl;
cout<<"@此时在最前面的同学是："<<endl;
cout<<C.GetQueue()<<endl;
cout<<endl;
cout<<"@最前面的同学打完一次饭后："<<endl;
C.DeQueue();
cout<<endl;
cout<<"@此时在最前面的同学是："<<endl;
cout<<C.GetQueue()<<endl;


return 0;

}