I am attempting my own Linked List implementation in C++ and cannot for the life of me figure out why I am having this error. I know there is an STL implementation but for reasons I am trying my own. Here is the code:
#include <iostream>
template <class T>
class ListElement {
public:
ListElement(const T &value) : next(NULL), data(value) {}
~ListElement() {}
ListElement *getNext() { return next; }
const T& value() const { return value; }
void setNext(ListElement *elem) { next = elem; }
void setValue(const T& value) { data = value; }
private:
ListElement* next;
T data;
};
int main()
{
ListElement<int> *node = new ListElement<int>(5);
node->setValue(6);
std::cout << node->value(); // ERROR
return 0;
}
On the specified line, I get the error "non-standard syntax; use '&' to create a pointer to member". What the hell does this mean?
You're trying to return the member function value
, not the member variable data
. Change
const T& value() const { return value; }
to
const T& value() const { return data; }
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