HELP!! Parking Garage program

[crentist505]

I'm really new to Java!

This is the assignment:
A parking garage has 5 customers daily. The garage charges a $5.00 minimum fee to park up to two hours. The garage charges an additional $1.00 per hour for each hour (or part of an hour) over two hours. The maximum charge for any given day is $12.00. All cars are gone by midnight. Write a program to calculate and print a summary of the charges for a day. For input the program will read the hours of usage for each of the 5 cars.

I can't figure out how to get the total charge for this program. Please HELP me

package parkinggarage;

import java.text.DecimalFormat;
import java.util.Scanner;
import java.util.ArrayList;

public class ParkingGarage {

    public static void main(String[] args) {
        Scanner stdin = new Scanner(System.in);
        ArrayList<Double> hoursList = new ArrayList<Double>();
        ArrayList<Double> costList = new ArrayList<Double>();
        DecimalFormat dfHours = new DecimalFormat("#.0");
        DecimalFormat dfCharge = new DecimalFormat("#.00"); 
        
        int i;
        double sumHours;
        double sumCost;
        double hours;
        double totalCost;
        double totalCharge;
        double totalHours;


        for (i = 1; i < 6; i++) {
            System.out.print("Enter the hours parked for car " + i + ": ");
            hours = stdin.nextDouble();
            hoursList.add(hours);
            
            totalCost = 5;
            if (hours > 2) {
                hours = hours - 2;
                totalCost = (totalCost + hours);
                costList.add(totalCost);
                    if (hours > 12) {
                    totalCost = 12;
                    costList.add(totalCost);
                }
            } 
            
        } 
            

        sumHours = 0;
        for ( double num1 : hoursList) {
            sumHours = sumHours + num1;
        }
        
        sumCost = 0;
        for (double num2 : costList) {
            sumCost = sumCost + num2;
        }
        
        totalHours = sumHours;
        totalCharge = sumCost;
        
        
        System.out.println("Total Hours " + dfHours.format(totalHours));
        System.out.println("Total Charge $" + dfCharge.format(totalCharge));

    }

}

[Norm]

how to get the total charge

What does the program print out? What should it print out?

[crentist505]

What does the program print out? What should it print out?

This is what it should print out (underlined values are entered by the user):

Enter the hours parked for car 1: 1.5
Enter the hours parked for car 2: 4.1
Enter the hours parked for car 3: 12.0
Enter the hours parked for car 4: 9.3
Enter the hours parked for car 5: 0.5

Total Hours 27.4
Total Charge $42.00

This is what my code prints out:

Enter the hours parked for car 1: 1.5
Enter the hours parked for car 2: 4.1
Enter the hours parked for car 3: 12.0
Enter the hours parked for car 4: 9.3
Enter the hours parked for car 5: 0.5

Total Hours 27.4
Total Charge $34.40 // this is not the value that should print out, I don't how to fix it

[Tolls]

First off, the requirements say:
"The garage charges an additional $1.00 per hour for each hour (or part of an hour) over two hours."
In your code you are adding the hours (-2) to the total, but you need to round up to the next whole hour.

That explains some of your missing money.

I also don't think your check for $12 (the maximum amount) is correct.
You need to check the totalAmount, and reduce it to $12 if it's greater than that, before adding it to the array.
Currently your check is against the hours, which isn't what the requirements say.

[crentist505]

Thanks so much!! I made these changes to my for loop. The output is is correct now!

        totalCost = 5;
        roundHours = (float) Math.ceil(hours);
        if (roundHours > 2) {
            roundHours = roundHours - 2;
            totalCost = (totalCost + roundHours);
        }
        if (totalCost > 12) {
            totalCost = 12;       
        } 
        costList.add(totalCost);

[Norm]

(totalCost + roundHours);

That makes an interesting expression. When does adding a cost (say in USDs) to the time in hours make sense???

[Tolls]

Well, when each hour always costs $1...
:)

[crentist505]

Thanks Tolls