我正在使用列表创建此模板队列。我不明白列表部分的错误是什么。当我键入 listObject.push_back() 时，程序说没有找到任何成员函数。提前致谢
#include <iostream>
#include <list>
using namespace std;
template<class T, class E>
class Queue{
public:
// Creates a Queue with an initial capacity of 10
Queue();
//Creates a Queue object with an initial capacity of size cap
Queue(int cap);
//adds item to the end of the queue
void add(T item);
//returns true if the queue is empty
bool isEmpty() const;
//removes the front item from the qeue
T remove();
//Provide a copy of the object that is first in the queue
T first() const;
//updates the item in the front of the queue
void updateFirst(T item);
//output all information currently stored in the queue
friend ostream& operator<<(ostream& out, const Queue<E>& obj)
private:
list<E> listObject;
int capacity;
};
template<class T, class E>
Queue<T,E>::Queue()
{
capacity = 10;
}
template<class T, class E>
Queue<T,E>::Queue(int cap)
{
capacity = cap;
}
template<class T, class E>
void Queue<T,E>::add(E item)
{
listObject.push_back( item );
}