Credit Card Validator with C++
This is a simple project that uses Luhn’s algorithm to validate a user’s credit card. The program works for all popular cards like Visa, Amex, MasterCard, etc. Luhn’s algorithm checks for basic validations; for example, a Visa card should start with 4 and then moves on to complex digit-wise calculations. It is a good program to learn because most e-commerce transactions require credit card validation.