Questions tagged [credit]
153 questions
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Finding the nth digit for credit card number
I'm having a hard time trying to find the 2nd to last digit of the user's credit card number, since that's the starting point for Luhn's algorithm. Is there a way to convert a long to an array and ...
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Why Does credit Fail Passing check50 Tests?
When I input the credit card numbers that check50 inputs in its tests to my program myself, It correctly identifies the numbers as expected. However, when I run check50, it's not identifying correctly....
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How can I add alternate digits in credit.c?
I am currently trying to solve the hacker version of pset 1 (credit.c). I have successfully completed the rest of the psets (hacker and standard versions). I need to sum up the even (starting from 0) ...
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