Change to string.swift

func makeChangeAsString(fromAmount amount: Double, withCost cost: Double) -> String {
	let change = amount - cost

	let dollars: Int
	var changeRemaining: Double = 0
	(dollars, changeRemaining) = getCoinCount(1.0, fromChange: change)
	let quarters: Int
	(quarters, changeRemaining) = getCoinCount(0.25, fromChange: changeRemaining)
	let dimes: Int
	(dimes, changeRemaining) = getCoinCount(0.1, fromChange: changeRemaining)

	let nickels: Int
	(nickels, changeRemaining) = getCoinCount(0.05, fromChange: changeRemaining)

	let pennies = Int(changeRemaining * 100)

	
	return "Your change is $\(change). That's \(dollars) dollars, \(quarters) quarters, \(dimes) dimes, \(nickels) nickels, and \(pennies) pennies."
}

func getCoinCount(_ valueCount: Double, fromChange change: Double) -> (coinCount: Int, changeRemaining: Double) {
	guard change > 0 else { return (0,0) }
	
	let pennyCountDesired = Int(valueCount * 100)
	let currentPennyCount = Int(change * 100)

	let coinCount = currentPennyCount / pennyCountDesired

	let remainingPCount = currentPennyCount % pennyCountDesired
	let changeRemaining = Double(remainingPCount) / 100

	return (coinCount, changeRemaining)
}

print(makeChangeAsString(fromAmount: 5.00, withCost: 2.15))
print(makeChangeAsString(fromAmount: 10.00, withCost: 2.38))
print(makeChangeAsString(fromAmount: 10.00, withCost: 2.33))