why i cannot create a class object?

[uytoor2]

I am working on an assignment regarding doubly linked lists... i have to write a driver program but i am not able to create an object of dllist class..plz help

  #include<iostream.h>
#include<conio.h>
template<class T>
class dlnode
{
	public:
	T info;
	dlnode *next,*previous;
    dlnode()
	{
		next=previous=0;
	}
	dlnode(const T& el,dlnode *nxt=0,dlnode *prev=0)
	{
		info=el;
		next=nxt;
		previous=prev;
	}
};


template<class T>
class dllist
{
	protected:
	dlnode<T> *head,*tail;
	public:
	dllist()
	{
		head=tail=0;
	}
	
	bool isempty(dllist<T>);
	void display();
	void insertinfront(const T&);
	void insertinend(const T&);
	void insertafter(const T&,T x);
	void deletefromfront();
	void deletefromend();
	void findvalue(const T&);
	void deletevalue2ndvalue(const T&);
	void movenode(const T&,int y);
	int countnode(dllist<T>);	
};

   template<class T>
   dllist<T> obj;           // <----------- here, why it's not creating object

    template<class T>
    bool dllist<T>::isempty(dllist x)         // IS EMPTY??
    {
    	if(x->head=0)
    	return true;
    	else
    	return false;
    }

    template<class T>
    void dllist<T>::insertinend(const T& el)   //INSERT IN END
    {
    	if(head==0)
    	{
    	head=tail=new dlnode<T>(el);
    	}
    	else
    	{
    	tail=new dlnode<T>(el,0,tail);
    	tail->previous->next=tail;
    	}
    }
    
    template<class T>
    void dllist<T>::insertinfront(const T& el)   //INSERT IN FRONT
    {   dlnode<T> *temp;
    	if(head==0)
    	{
    	head=tail=new dlnode<T>(el);
    	}
        else
        {   
        	head->previous=new dlnode<T>(el,head,0);
        }
    }



int main()
{
	 
	

	return 0;
}

[helios]

The template keyword can only be applied to classes and functions, not to objects. If you want to create an instance of a dllist<T>, you have to tell the compiler the actual value of T. E.g.

dllist<int> obj;

You should avoid putting an instance in global scope in this case. You don't need it.

[uytoor2]

thanks brother