Consider the following C program segment
struct Cell Node {
    struct Cell Node *left Child;
  int element;
   struct Cell Node *right Child;
   }
int Dosomething (struct Cell Node *ptr)
{
   int value = 0;
   if (ptr! = NULL)
    { if (ptr-> left Child! = NULL)
     value = 1 + Dosomething (ptr -> left Child);
     if(ptr-> rightChild! = NULL)
     value = max (value, 1 + Dosomething (ptr- > rightChild));
     }
  return (value);
}
The value returned by the function Dosomething when a pointer to the root of a non-empty tree is passed as argument is