On the Web, research the Luhn formula that is used to verify credit card numbers. Write a program that allows the user to enter a 16-digit account number in groups of four, and display a 1 or 0 that...

On the Web, research the Luhn formula that is used to verify credit card numbers. Write

a program that allows the user to enter a 16-digit account number in groups of four, and

display a 1 or 0 that indicates whether the credit card number is valid or invalid. If you

have access to one, test the program with a MasterCard or Visa account number to verify

that it works correctly. Save the file as Luhn.cpp.