Create a C++ function called "int numLeavesSingle(node* p);" that counts the number of half nodes and the number of leaves in a binary tree. For example, in this following image, based on this tree, the function should return the value 4.

Use the following class to complete this:

class node

{

public:

int data;

node * left;

node * right;

}

7 2 9 1 5 14