Please code in C++. Struggling with the using a circular double linked list. Unable to get the reverse display functioning.

Specifications: Develop a Circular Doubly-Linked List with head node class based on the following ADT Name: CDLH List Data Members Node * head node; l/a pointer pointing to the first node, e g., the head node int list size; /The size of the list Member Functions bool emptyO//check whether the list is empty void insert succ(Node new, Node "succ) insert a new node before the successor void erase node(Node *node) //delete the node from the list int erase_by data(int d) delete all the node(s) that has the data specified, return the number of nodes that have been deleted void displayO display all items on the list, from the first node to the last, moreover, display the size of the list void reverse_display0 //display all items from the last to the first, also display the size; access the last item from the head node double calc mean0 // calculate and return the mean of all nodes' data on the list The data stored in a Node object is a score between 60 and 100, generated randomly DO NOT use the time function, so that the random numbers generated are always follow the same sequence. The driver must conduct the following tasks in the order specified below: Instantiate 20 Node's objects, where the scores are generated randomly (must use a loop) 2. Instantiate a CDLH_List object, named exlist 3. Insert all 20 nodes 4. Display all nodes and the size of the list. 5. Display reversely of all nodes and the size of the list. 6. Calculate and display the mean. 7. Delete the first node 8. Display all nodes and the size of the list. 9. Display reversely of all nodes and the size of the list. 10. Calculate and display the mean. 11. Erase all the nodes that have the same value as the data specified (pick a number that exists). 12. Display the all nodes and the size of the list. 13. Display reversely of all nodes and the size of the list. 14. Calculate and display the mean