C++ I have a small question in this piece of code. I wanna add that if there are

Question

C++ I have a small question in this piece of code. I wanna add that if there are no nodes return -1; and then in main i can call the "display error" Please if you do not know don't answer it. and no it is not as simple as:

if (node == NULL)
{
  return -1;
} //This would be wrong and totally wrong so please chegg answerers don't answer if you do not know

int IntList::numNodes(ListNode* node)
{
int count = 1;
if (node == NULL)
{
  return 0;
}
else
{
  count += numNodes(node->next);
  return count;
}
}

Explanation / Answer

int IntList::numNodes(ListNode* node)
{
int count = 1;
if (node == NULL) throw memoryAllocation("node allocation error");
{
   return -1 ;//return the address of the node on the heap
}
else
{
   count += numNodes(node->next);
   return count;
}
}

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