Is the time complexity of the empty algorithm O(0)?

Question

So given the following program:

---

Is the time complexity of this program O(0)? In other words, is 0 O(0)?

I thought answering this in a separate question

Answer 1

There is no such thing as O(0). Even an oracle machine or a hypercomputer require the time for one operation, i.e. solve(the_goldbach_conjecture), ergo:

All machines, theoretical or real, finite or infinite produce algorithms with a minimum time complexity of O(1).

But then again, this code right here is O(0):

// Hello world!

:)