/**
 * A cash register totals up sales and computes change due
 * 
 * @author Anne DeFrance
 * @version September 21, 2005
 */
public class CashRegister
{   // instance variables
    private double totSpent;
    private double totPaid;
    
    // constructor with no args
    CashRegister()
    {   totSpent = 0.0;
        totPaid = 0.0;        
    }  // end constructor
    
    public double getTotSpent()  // I added this after class
    {   return totSpent;  }   // in case the customer wants a subtotal
    
    public void ringUpItem(double cost)
    {   totSpent = totSpent + cost;
    }  // end ringUP
    
    public void amtPaid(double amt)
    {   totPaid = totPaid + amt;
    }  // end amt paid
    
    public double changeNeeded()
    {   return totPaid - totSpent;
    }  // end change needed
    
    
    public String toString()
    {   String temp = "";
        temp = "\n\tYour total purchases so far are " + totSpent;
        temp = temp + "\n\tYour payment so far is " + totPaid + "\n";
        return temp;
    }

    
}