implementing nested linked list in c++ - c++

Question

Is this kind of implementation of nested linked list valid in c++?
if yes,then how to declare a head to those nested linked lists?
what is the syntax for accessing the data in those lists inside?
here is a part of my general code.
I'm trying to perform a library management system in c++.
struct course
{
string course_name;
struct course_books
{
struct wait_list
{
long stu_num;
//date inserted
wait_list * next_wait_stu;
};
struct voters_list
{
long stu_num;
int vote;
voters_list * next_voter;
};
struct deposit_list
{
long stu_num;
//date given
//bring back date
deposit_list * next_depositor;
};
};
course * next_course;
};
struct demand
{
int ISBN;
string book_name,
course,
author,
edition;
int demands_num;
struct demanding_students
{
string demander_name;
int demander_stu_number;
//demand date
demanding_students * next_demanding_stu;
};
demand * next_demand;
};
struct STUDENT_INFO
{
struct all_deposited_books
{
int ISBN;
//date given
//bring back date
all_deposited_books * next_dep_book;
};
struct today_deposited
{
int ISBN;
today_deposited * next_today_dep_book;
};
};

Answer 1

You would probably want to use classes for this instead. Something like:
class STUDENT_INFO{
protected:
struct all_deposited_books
{
int ISBN;
//date given
//bring back date
};
struct today_deposited
{
int ISBN;
};
public:
all_deposited_books * next_dep_book;
today_deposited * next_today_dep_book;
};
Then you create a class instance like: STUDENT_INFO theBestStudentInfo; and if you want to accses a struct variable inside that you just call: theBestStudentInfo.all_deposited_books[0].ISBN = 5; or something like that.
Aswell as I dont think you can create a struct instance inside the struct itself, like:
struct all_deposited_books
{
int ISBN;
//date given
//bring back date
all_deposited_books * next_dep_book; //<- this is probably gonna cause problems
};
first create the struct and how its going to look like, and then you can start creating how many instances of it as you want :)