Problem with destructors

Ok in my tree program, I have to use a reference to occupancy in my tnod struct. So In my destructor

Code:

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~TNode (void) {
  occupancy--;
  delete data;
}

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I tried decrementing it but doesnt work because cant decrement an reference... So how do I decrement the Tnode occupancy (reference to the tree struct occupancy)? Also, to delete a TNode in my destructor do I only use delete data, which deletes the data in the tnode or do I also have to say free(this)?

There's nothing wrong with decrementing a reference if it is a reference to a type that supports decrementing. So if occupancy is a long&, then that code should work. Why do you think it's not working?

You do not need to free(this), since the destructor is being called because something else is already freeing the current object.

Quote:

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I tried decrementing it but doesnt work because cant decrement an reference...

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You mean, you're trying to change what it points to? You're right, you can't do that with a reference. You can with a pointer, though.

the tree struct has a long occupancy
and the tnode struct has a long & occupancy which references the tree occupancy. So, how would I decrement the tnode occupancy in a tnode destructor?

You can decrement a reference.

That code should work. Why do you think it's not working?

Quote:

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You can decrement a reference.

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You can decrement a reference (in fact you can do everything to a reference that you can do to a regular variable). But you can't change what it points to.

Yes, but that fact is just confusing the issue. The OP wants to decrement the value it refers to, which is possible. There is nothing wrong with the posted code. A lot more information would be helpful in determining the problem.

nvm guys i made a stupid mistake... thnxs for the help tho...