const crc = require("./crc.js");
let message = process.argv[3];
let flag = process.argv[2];
switch (flag) {
    case '-e':
        console.log(crc.encode(message));
        break;
    case '-d':
        console.log(crc.decode(message));
        break;
    default:
        throw "incorect flag"
}