C++ programming, add explain, please.

Write a C++function to delete a node to the beginning of a linked list. Your function takes one argument- the head of the linked list with at least one node in it. Your function should modify the head of the linked list to point to the new head node. If the list is empty after deleting, head points to null Example Initial List: 4->2->3 List After Function Call: 2->3 void Delete(Node& head); The linked list structure struct Node int keys node *next; bi For example Test Result // head points to linked 1ist 5->3->2->4 After calling your function, the list is 3->2->4 // Delete(head); // head points to linked list 3->2->4 Answer: (penalty regime: 05.10.15, %) 1 void Add Node& head, int key) Node *temp = new Node; temp->val key; temp->next = head; head temp ; 4 6 7