struct link {
        char * name;
        struct link *next;
    };


struct list{
        struct link  *first;
        struct link *last;
    };



 struct list *list_new(){
    struct list *n = calloc(1, sizeof(struct list));
    return n;
};




struct list* copyList(struct list*list){
     struct list*new = list_new();
     struct link *current = list -> first;
     struct link *newCurrent = new -> first;
     struct link *p;
      if(current == NULL)
        return NULL;


      newCurrent = malloc(sizeof(struct link));
      newCurrent = p;

      while (current != NULL) {
        p ->shelfName = strdup((char*)current -> shelfName);
        p->next = malloc(sizeof(struct link));
        p = p->next;
        current = current->next;
      }

      return new;
    }