compusalle/credit-card-checker

Credit Card Checker Using Python

Credit Card Checker Using Python

@Copyright - Wassem Alaa-Iddin

Free To Use - Name Maintaining Would Be Nice.

---

If python 2 is not working, please use python3.

Program Algorithm

The used algorithm is Luhn algorithm.

This algorithm works by:

1. For each number, from right to left

   • First, third, fifth, and on (Odd Columns) multiply by 1
   • Second, fourth, fifth, and on(Even Column) multiply by 2
     • If, after multiplication, the number is bigger than 9, e.g., 9*2 is 18, make 1 + 8 = 9.

2. Add all digit sum and check by mod 10 using this formula:

   • 10 – (sum mod 10), if = 0 then pass else it’s not valid.

credit card generator