Are there any rules on when integers should be declared or defined? Sometimes I see this done before setup and sometimes I see them declared in setup. What are the rules that tell me when I should declare stuff?

What are the rules on declaring integers?

system April 26, 2018, 7:02pm 2

You should define any variable (not just the integer ones) with the minimum scope possible.

Some of the provided examples are not very good in this respect.

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