Accessing attribute of Object Pointer in C++

Question

Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. question from:https://stackoverflow.com/questions/65858936/accessing-attribute-of-object-pointer-in-c

Answer 1

A void* is a pointer to void. void is no type. It is the absense of a type. It has no member functions that you could call. A void* can point to any object and in past times there were some use cases of void* in user code. Not anymore. If you want a pointer to a node, that is node*.

Taking into account the comment on naming, using struct to reduce verbosity, and using in-class initializers and the member initializer list, because members are not initialized in the constructors body, your code can look like this:

#include <iostream>

struct Node {
    int data;
    int* nextnode = nullptr;  
    Node(int storedData) : data(storedData)
    {}
};    

int main() {
    Node node(45);
    Node* node_ptr = &node;
    int b = node_ptr->data;   
    std::cout << node_ptr << std::endl;
    std::cout << b << std::endl;
}