#include<iostream>
using namespace std;
class sqstack
{
private:
int top;
int maxsize;
int *elem;
public:
sqstack(int size)
{maxsize=size;
elem=new int[maxsize];
top=0;
}
~sqstack(){delete []elem;}
int length();
bool empty(){return top==0;}
void push(int e);
void pop(int &e);
void display();
};
int sqstack::length()
{
追问?
这么点?
不全吧