card_validator

Rust CLI to verify CC numbers using Luhn's Algorithm

Source is located at /src/main.rs

1. Install Rust

2. clone repo and run:
   cargo build
cargo run -- $(cat ./cardnumbers)
   The program takes card numbers as command line arguments
   as that was a requirement. To show sample output of I created
   the file ./cardnumbers, it contains example numbers and is passed
   using cat command.