Execution of function of left node and right node

#1

in the code we wrote max(left.height …) but height is not a member function of node class? shouldn’t we have written something like max(height(left),height(right)…)?

#2

p is a object of Pair class
and Pair class has 2 data members height and diameter

so you can use left.height

#3

in this question the data member of the pair class int height is the function height which we defined earlier or a new variable like int diamater?

#4

it’s just a variable of type int
Yes , like int diameter