Alladin Alladin - 3 days ago 7
C++ Question

invalid use of template name without an argument list

I am facing a problem with my linked list class, I have created the interface and implementation files of the class, but when I build it, this error occurs:"invalid use of template name 'LinkedList' without an argument list". can you please help me ASAP
here's my interface file:

#ifndef LINKEDLIST_H
#define LINKEDLIST_H

template <typename T>
struct Node{
T info;
Node<T> *next;
};

template <typename T>
class LinkedList
{
Node<T> *start;
Node<T> *current;
public:
LinkedList();
~LinkedList();
};

#endif // LINKEDLIST_H


and this is my implementation code:

#include "LinkedList.h"

LinkedList::LinkedList()
{
start = nullptr;
current = nullptr;
}

LinkedList::~LinkedList()
{

}

Answer

Write it like this:

template<typename T>
LinkedList<T>::LinkedList()
{
   start = nullptr;
   current = nullptr;
}

And similarly for other member functions. But you'll run into another problem - declarations and definitions of a template can't be separated to different files.

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