Calculate daily interest

interest.js

// Daily interest calculating.
// >> node interest.js days amount interest

var args = process.argv.slice(2);

var interestDays = function(days, amount, interest) {
	for (i = 0; i < days; i++) {
		amount = Number(amount) + ((interest / 100) * amount);
	}
	return amount;
}

console.log('\ntoday payment: ' + interestDays(args[0], args[1], args[2]) );