#include<iostream.h>
class sque
{
private:
int front,rear,count,maxsize;
int *elem;
public:
sque(int size)
{
maxsize=size;
count=front=rear=0;
elem=new int[maxsize];
}
int length()
{
return count;
}
void inque(int &e)
{
if(count==maxsize)
cout<<"栈已满"<<endl;
else
{
elem[rear]=e;
rear=(rear+1)%maxsize;
count++;
}
}
void ouque(int &e)
{
if(count==0)
cout<<"栈中已无元素"<<endl;
else
{
e=elem[front];
front=(front+1)%maxsize;
count--;
}
}
void accessnode()
{
}
};
void main()
{
int size;
int n,temp;
cout<<"请输入栈的最大空间"<<endl;
cin>>size;
sque sque1(size);
while(1)
{
cout<<"请输入一个整数，0表示结束输入"<<endl;
cin>>n;
if(n==0)
break;
else if(n>0)
{
sque1.inque(n);
}
else
sque1.ouque(temp);
}
cout<<"栈的长度为"<<sque1.length()<<endl;
}