All Questions
6 questions
0
votes
1
answer
118
views
Credit Card Check
So I am on pset6 trying to implement the credit card check.
I've already completed working through the numbers and am not having any issue with the actual algorithm.
But for some reason my if ...
- 117
0
votes
1
answer
107
views
pset6 credit help with calculations in python
I am trying to convert my credit solution from C to python, but for some reason it is not working. Attached is my code and the problems
from cs50 import get_int
card, a, m, v = False, False, False, ...
- 5
1
vote
1
answer
2k
views
Pset6 credit python Problem
I try to convert my Credit Solution from C to Python now.
But on Line 19 ( doubleCheck = ccNumber[i] * 2 ) i always get the error "TypeError: 'int' object is not subscriptable"!
How can i fix this?
...
user23533
1
vote
1
answer
240
views
problem with pset6 python credit
Below is my code:
[hidden code]
output is:
Enter the card number: 378282246310005
firstTwo 37; firstOne 3; cardlen 15
MASTERCARD
note: it shows MASTERCARD instead of AmEx..Why?
- 13
0
votes
1
answer
374
views
pset6 credit.py returns INVALID for correct card number
When I input a valid credit card number, my code returns INVALID. I'm not sure about where did I go wrong in my code despite analysing it for hours. I would appreciate any help with this. Thank you :)
...
- 21
0
votes
1
answer
178
views
What's wrong with this luhn's algorithm? Python
s=cs50.get_string()
luhn=0
n=len(s)
for i in range(-1,-n-1,-1):
if i%2==0:
if 2*ord(s[i])>9:
luhn+=2*ord(s[i])-9
else:
luhn+=2*ord(s[i])
else:
...
- 167