#pragma once
#include <iostream>
#include <iomanip>
using namespace std;
template<class T>
class Queue
{
struct Node
{
T a;
Node *next;
};
public:
Queue();
void push(T b);
void pop();
int getlength();
virtual void print();
private:
Node *head;
Node *rear;
};
template<class T>
void Queue<T>::push(T b)
{
Node *p1 = new Node;
p1->a = b;
p1->next = NULL;
rear->next = p1;
rear = p1;
head->a++;
cout << setw(2) << b << setw(2) << "进入队列" << endl;
}
template<class T>
void Queue<T>::pop()
{
Node *p;
p = head->next;
cout << " " << setw(2) << p->a << setw(2) << "出队" << endl;
head->next = p->next;
delete p;
head->a--;
}
template<class T>
int Queue<T>::getlength()
{
return head->a;
}
template<class T>
void Queue<T>::print()
{
Node *p;
p = head->next;
cout << "队列中的元素" << endl;
while (p)
{
cout << p->a << "->";
p = p->next;
}
cout << "NULL" << endl;
}
template<class T>
Queue<T>::Queue()
{
rear = head = new Node();
}