Hi I need help starting this program
The program check to see if a credit card is valid or not
the number is 16 digits long
EX: Card Number 1234567890123456
Code:
1. Double the value of alternating digits of the credit card number
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
x2 x2 x2 x2 x2 x2 x2 x2
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1 4 3 8 5 12 7 16 9 0 1 4 3 8 5 12
2. Add all the digits
1 + 4 + 3 + 8 + 5 + 12 + 7 + 16 + 9 + 0 + 1 + 4 + 3 + 8 + 5 + 12 =98
3. Divide the sum by 10
98/10=9.8
If the number is evenly divisible then it is valid
If it is not evenly divisible than it is invalud
thanks for the Help Joe