I really can't find anything that helps me get over this error. It is embarrassing to admit to what might be a simple fix. If I am right to think that I must declare a variable before I use it. I understand the phraseology but how to implement it. I would like to know why this mistake is present wh…

Exit status 1 'calculateSum' was not declared in this scope

in0 October 19, 2021, 12:54am 9

What do you mean by that? When you followed the instructions provided by Idahowalker, was COM3 the new prot that showed up after plugging in the Arduino board?

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Exit status 1 'calculateSum' was not declared in this scope

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