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Tagged with credit credit-card-number
2 questions
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Pset1 valid visa number as invalid
I built the first part to check whether a number is a valid AMEX number and used the same logic to check for Visa number but the codes don't seem to work as I tried with several valid visa numbers and ...
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Why does this code sometimes give me a different sum when i run it for the same cc number?
I'm working on the credit problem in pset1, and this is only part of what should be done. All I'm trying to do here is to multiply every other number (from the cc number entered by the user) by two, ...
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