#ifndef __LINKED_LIST_H__
#define __LINKED_LIST_H__

typedef struct _Node { // canonical name struct _Node
    //int value;   // v1: integers
    //char* value; // v2: strings
    void* a_value; // v3: anything
    struct _Node* next; // need to use canonical name
} Node; // shortcut name: Node

void print_linked_list(Node* head, void (*print_value_fn)(void*));
void append(void* a_value, Node** a_head, Node** a_tail);
void destroy_linked_list(Node** a_head, Node** a_tail);

#endif /* __LINKED_LIST_H__ */