IN C PLUS Given the IntNode class, define the FindMax$()$ function to return the largest value in the list or $-99$ if the list is empty. Assume all values in the list are non$-$negative.

Ex: If the list contains:

head $->14->191->186->181$

FindMax$($headNode$)$ returns $191.$

Ex: If the list contains:

head $->$

FindMax$($headNode$)$ returns $-99.$Given the IntNode class, define the FindMax$()$ function to return the largest value in the list or $-99$ if the list is empty. Assume all values in the list are non$-$negative.

Ex: If the list contains:

head $->14->191->186->181$

FindMax$($headNode$)$ returns $191.$

Ex: If the list contains:

head $->$

FindMax$($headNode$)$ returns $-99.$