size() must be the first sentence of setup().
PS.: don't state the obvious and unhelpful in the subject of your topic, try instead to describe succinctly your problem: there are so many beginners needing help here, imagine if all the topics were similar!
PS.: don't state the obvious and unhelpful in the subject of your topic, try instead to describe succinctly your problem: there are so many beginners needing help here, imagine if all the topics were similar!