Write a C++ function to find the maximum value in a linked list of integers. The function takes one argument: the head of the linked list. The function should traverse through the linked list, find the maximum value, and return the maximum value.

int LinkedListFindMax(node *head); 

The linked list structure:

struct node { int value; node *next; }; 

The following code will run to display the output:

int output = LinkedListFindMax(head); cout << output; 

For example:

Test	Result
//9 -> 3 -> 100 -> 1000 -> -3 -> 9876	9876