How to make two-link data structures

Question

Student informetion.
https://code.sololearn.com/W85IvoQXZBZD/?ref=app

Answer 1

In C language you can do that by creating a structure with two pointers. This method is used in doubly linked list. For eg-

struct node{
struct node *tail;
int data;
struct node *head;
}
//The above structure now has two links and it is also a user defined data type.

Answer 2

İ am understand thanks

Answer 3

İs it one-way

Answer 4

For making it one way you can remove the tail pointer.

Answer 5

Examing
student1-->student2-->student3-->null
Student1--> lesson1--> lesson2-->null
Student2-->lesson3-->lesson1-->null
Student3-->lesson2-->lesson1-->null

Answer 6

This like

Answer 7

Correct👍

Answer 8

But
Class student {}
And class lesson {}
How Do we lesson==student student-->lesson-->null