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A comment on Finally Getting Two's Complement. Parent comment

Re:Finally Getting Two's Complement by Lukas_Skywalker on Wednesday June 28, 2023 @05:15AM (#36504127)
That is exactly the 9‘s complement. The digits add up to 9.
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Re:Finally Getting Two's Complement by venusenvy47 on Monday July 10, 2023 @08:59AM (#36665716)
I thought there was more to the calculation of N's complement. Something about adding one to the result. It doesn't seem like something you can easily perform using inspection.
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