Is it possible that a class attribute is the class itself?

Question

I’m starting to learn C++ Object oriented, and I have to make an algorithm using chained lists. In C, I used a structure that had as one of the attributes a pointer to the structure itself. I wonder if it is possible to do something similar to the C++, but using classes instead of structures.

Follow an example of what I intend to do:

class item {
public:
    item(int profit, item *next);
    ~item();

    insertItem(int profit, item *ptList);

    returnItem(int i, int w, int W, item *ptList);//Função que retorna o objeto de uma matriz simulada com lista encadeada

private:
    int profit;//Valor correspondente ao objeto
    item *next;//Ponteiro para o próximo item da lista

};

Answer 1

In C++ it is possible that an attribute of a class is the class itself? NAY.

In C++ it is possible that an attribute of a class is A POINTER to the class itself? YES.

Detail: in C++ a C structure is also considered as a class.

Tip: In class names, start with uppercase. It’s a convention that virtually everyone uses.

class Item
{
public:
    Item(int profit, Item* next);
    ~Item();

    void insertItem(int profit, Item* ptList);

    // nao consegui entender isso, acho que e' isso que voce quer
    Item* returnItem(int i, int w, int W, Item *ptList);

private:
    int profit; // Valor correspondente ao objeto
    Item* next; // Ponteiro para o próximo item da lista
};

Answer 2

I came to do a similar college job, I had done a program with a structure with a pointer to the structure itself, but then I had to do one in tree and using classes. The only thing that changed is that I had two pointers to the class itself.

• Creating a pointer to the class itself you are just creating a path to a particular memory address, not necessarily this address will be filled in.
• You can declare a class with a pointer to the class itself and then build new class as needed, so you would create your chained list.