need help:(

Use the following declaration for a singly linked list:- struct node { int data; node *next; }; The following diagram shows the structure of the singly linked list:

5 as the head, 4, 3 , 2, 1

Write C++ codes to create a linked list that has the data and a Head pointer pointing to the first node as shown in the diagram above. Create the four nodes and a pointer. Link the four nodes as in the diagram.

B. Write a function that will insert a node at the end of the list. Use the function declaration given below. The function takes input a pointer to the list and data.

void InsertNode(node *p, int key)

C. Write a function that will remove the last node from the list.

Use the function declaration below:- void RemoveLastNode(node *p)