CS 305 – Concepts of Computer Programming XXXXXXXXXXPossible Points Fall 2021 Term XXXXXXXXXXDue 3 Dec 2021 With this program you will test whether a given 16-digit credit card number is valid or not....

Instructions are included are in the file attached


CS 305 – Concepts of Computer Programming 200 Possible Points Fall 2021 Term Due 3 Dec 2021 With this program you will test whether a given 16-digit credit card number is valid or not. Here are the steps in your program: • You will prompt the user to enter a 16-digit credit card number. • You will read the credit card number in as an int. • You will perform the Luhn's test (outlined below). • You will then print if the credit card number is valid or not. You will be making the following assumptions: • The user enters only digits. • The user enters exactly 16 digits. Here are possible scenarios that may happen. Your output statements must be exactly the ones specified. Points will be deducted for variations. Scenario 1 Enter 16-digit credit card number: 1234567891234567 Invalid credit card number Scenario 2 Enter 16-digit credit card number: 4222222222222220 Valid credit card number Luhn's Test: Let us say that the credit card number was made of the following digits: d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 d12 d13 d14 d15 d16 Then the Luhn's algorithm goes as follows: • Multiply all the odd digits d1, d3, … d15 by 2. • Sum the digits of each product. • Now add all the even digits d2, … d16 and the single digit products of the odd digits. • If the final sum is divisible by 10 then the credit card is valid, otherwise it is invalid. Here are two examples worked out - one is a valid credit card number, and the other is an invalid credit card number. Valid Credit Number d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 d12 d13 d14 d15 d16 4 4 3 2 3 3 3 8 8 4 1 3 8 3 4 3 8 6 6 6 16 2 16 8 8 6 6 6 7 2 7 8 8 4 6 2 6 3 6 8 7 4 2 3 7 3 8 3 The sum of the digits is 80. It is divisible by 10 and hence the credit card number is valid. Invalid Credit Number d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 d12 d13 d14 d15 d16 8 2 7 3 1 2 3 2 7 3 5 1 0 5 6 9 16 14 2 6 14 10 0 12 7 5 2 6 5 1 0 3 7 2 5 3 2 2 6 2 5 3 1 1 0 5 3 9 The sum of the digits is 56. It is not divisible by 10 and hence the credit card number is invalid. You must first write the pseudo code version of this algorithm. You do NOT have to submit the pseudo code. Once you have the pseudo code then you can translate that to Python. To obtain the last digit of a number use the modulo (%) operator. To remove the last digit of a number divide by 10. Here are snippets of code that will help you with your Python program. # Prompt the user to enter the credit card number credit_card = int (input ('Enter 16-digit credit card number: ')) # Get digit d16 d16 = credit_card % 10 # Get digit d15 cc = credit_card // 10 d15 = cc % 10 # Multiply odd digit by 2 and sum digits d15 = d15 * 2 sum_d15 = (d15 % 10) + (d15 // 10) # Final validity test for the sum of digits if (sum_digits % 10 == 0): print (...) else: print (...) The program that you will be writing will be called CreditCard.py. We will be looking at good documentation, and adherence to the coding convention mentioned in class. • Your variable names will be in lower case. • You will use meaningful variable names wherever possible. • You will indent by two spaces. • All your code must be within def main(): • There must be a final call to main(). Your file CreditCard.py will have the following header: # File: CreditCard.py # Description: # Student Name: # Student ASU ID: # Course Name: CS 305 # Date Created: # Date Last Modified: Use Black Board to turn in your CreditCard.py file. Your work by 2359 on 3 Dec 2021. • Your Python program should have the proper header. • Your code must run before submission. • You must turn in a screen shot of the executed program.