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A simple program in C that check if a number is a valid credit card number developed during CS50 intro to computer science course.

GPL-3.0 license

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Name		Name	Last commit message	Last commit date
Latest commit History 8 Commits
LICENSE		LICENSE
README.md		README.md
credit		credit
credit.c		credit.c

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README

A simple program in C that check if a number is a valid credit card number.

Features

Luhn algorithm check
Support to Mastercard (only for cards starting with 51, 52, 53, 54 and 55), Amex and Visa

Required libraries

CS50 Library for C: https://cs50.readthedocs.io/libraries/cs50/c/

Compile instructions

Using GCC gcc credit.c -lcs50 -o credit

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A simple program in C that check if a number is a valid credit card number developed during CS50 intro to computer science course.

c checksum credit-card luhn-algorithm

GPL-3.0 license

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