illeagal indirection error in iterator class - c++

Question

Got this error messege on an attempt to return the data from an Item template under iterator class.
I don't understand why Im getting an error (C++)..
template<class E>
class Item {
Item<E>* next;
E data;
public:
Item() :next(NULL) {}
Item(const E& pdata) :next(NULL), data(pdata) {}
void setNext(Item<E>& next) { this->next = next; }
Item<E>& getNext() { return next; }
void setData(const E pdata) { this->data = data; }
E& getData() { return data; }
};
this is the iterator class:
class Iterator {
Item<T>* p;
public:
Iterator(Item<T>* pt = NULL) :p(pt) {}
Iterator& operator++(int) {
p = p->getNext();
return *this;
}
T& operator*() { return *(p->getData()); }
friend class RoundList<T>;
};
they're both under a template class that called RoundList (template )
help...?

Answer 1

This is the code I tested.
template <class E>
class Item {
Item<E>* next;
E data;
public:
Item() :next(NULL) {}
Item(const E& pdata) :next(NULL), data(pdata) {}
void setNext(Item<E>& next) { this->next = next; }
Item<E>& getNext() { return next; }
void setData(const E pdata) { this->data = pdata; }
E& getData() { return data; }
};
template <class T>
class Iterator {
Item<T>* p;
public:
Iterator(Item<T>* pt = NULL) :p(pt) {}
Iterator& operator++(int) {
p = p->getNext();
return *this;
}
T& operator*() { return p->getData(); }
};
int main()
{
Item<int>* test = new Item<int>();
Iterator<int>* iterTest = new Iterator<int>(test);
test->setData(2);
cout << iterTest->operator*() << endl;
cout << (test->getData() = 4) << endl;
}
I'm not sure how you want to use your Iterator, but I tried with a simple type, like int and it works. Anyway I change your *(p->getData()) in p->getData() since in getData you are already returning a reference.