package coins_to_register;

public class CashRegister
{
	private double purchase;
	private double payment;

	public CashRegister()
	{
		purchase = 0;
		payment = 0;
	}

	public void recordPurchase(double amount)
	{
		purchase = purchase + amount;
	}

	public double getPurchase()
	{
		return purchase;
	}


	public void enterPayment(int coinCount, Coin coinType)
	{
		payment = payment + coinCount*coinType.getValue();
	}

	public double giveChange()
	{
		double change = payment - purchase;
		purchase = 0;
		payment = 0;
		return change;
	}

}