How to repeat code after invalid data is entered

Ryley C

8y955

I have an assignment to calculate the *parkingFee*, I'm having a hard time figuring out how to get this code to repeat after a invalid number (greater than 24 or less than 1) has been entered.

The parking fee in a parking station is calculated on whole number of hours multiplied by the hourly rate of $2.50. A program is required to input and validate the hours to be between 1-24 inclusive. Calculate the parking fee given there is a maximum parking fee of $20.00. Output the hours parked and the parking fee (formatted to 2 decimal places)."

Below you'll find the code that I'm having trouble with. Any help would be greatly appreciated.

namespace _3PRB_Assignment_Part_1
{
class Program
{
static void Main(string[] args)
{
/* Ryley Copeman
* 29/08/2018
* Assignment parkingFee2*/
/* PSEUDOCODE */
/* HOURLY_RATE=2.5
* INPUT parkTime
* parkFee = HOURLY_RATE * hours
* OUTPUT parkFee */
decimal parkTime; // input - time in hour eg 1.5 for 1 and a half hours
const decimal HOURLY_RATE = 2.50m; // HOURLY_RATE * INPUT parkTime = parkFee
const decimal MAX_FEE = 20.00m; // MAX_FEE is set as a payment cap and ignores any extra charges incurred over 8 hours
decimal parkFee;
Console.WriteLine("ParkingFee1 program developed by: Ryley Copeman");
Console.WriteLine("Please enter your total time parked in hours: Eg 1.5 or 3.0");
parkTime = decimal.Parse(Console.ReadLine());
if (parkTime > 8)
{
Console.Write("Total fee is $" + MAX_FEE);
}
else
{
parkFee = Math.Ceiling(parkTime) * HOURLY_RATE;
Console.Write("Parking Fee = $" + parkFee);
}
while(parkTime < 0 || parkTime > 24) // validate...
//while (parkTime <= 0) )
{
Console.WriteLine("Error – Park Time out of range");
Console.WriteLine("Enter - Park Time between 0 and 24 (HOURS):");
parkTime = int.Parse(Console.ReadLine());
}
}
}
}

2 Replies

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Rafnas T P8y ago
Accepted answer
hi,
try below code
namespace _3PRB_Assignment_Part_1
{
    class Program
    {
        static void Main(string[] args)
        {
           /* Ryley Copeman
            * 29/08/2018
            * Assignment parkingFee2*/

            /* PSEUDOCODE */
            /* HOURLY_RATE=2.5
             * INPUT parkTime
             * parkFee = HOURLY_RATE * hours
             * OUTPUT parkFee */


                decimal parkTime;  // input - time in hour eg 1.5 for 1 and a half hours
                const decimal HOURLY_RATE = 2.50m; // HOURLY_RATE * INPUT parkTime = parkFee
                const decimal MAX_FEE = 20.00m; // MAX_FEE is set as a payment cap and ignores any extra charges incurred over 8 hours
                decimal parkFee;
                Console.WriteLine("ParkingFee1 program developed by: Ryley Copeman");
                Console.WriteLine("Please enter your total time parked in hours: Eg 1.5 or 3.0");
                parkTime = decimal.Parse(Console.ReadLine());
              if(parkTime < 1 || parkTime > 24)
                {
                Console.WriteLine("Error – Park Time out of range");
                Console.WriteLine("Enter - Park Time between 0 and 24 (HOURS):");
                parkTime = int.Parse(Console.ReadLine());

               }
            else
            {
                if (parkTime > 8)
                {
                    Console.Write("Total fee is $" + MAX_FEE);
                }
                else
                {
                    parkFee = Math.Ceiling(parkTime) * HOURLY_RATE;
                    Console.Write("Parking Fee = $" + parkFee);
                }
            }

            }
        }
    }
Rafnas T P8y ago
1. namespace _3PRB_Assignment_Part_1
2. {
3. class Program
4. {
5. static void Main(string[] args)
6. {
9. decimal parkTime; // input - time in hour eg 1.5 for 1 and a half hours
10. const decimal HOURLY_RATE = 2.50m; // HOURLY_RATE * INPUT parkTime = parkFee
11. const decimal MAX_FEE = 20.00m; // MAX_FEE is set as a payment cap and ignores any extra charges incurred over 8 hours
12. decimal parkFee;
13. Console.WriteLine("ParkingFee1 program developed by: Ryley Copeman");
14. Console.WriteLine("Please enter your total time parked in hours: Eg 1.5 or 3.0");
15. parkTime = decimal.Parse(Console.ReadLine());
16. while( parkTime < 1 || parkTime > 24)
17. {
18. Console.WriteLine("Error – Park Time out of range");
19. Console.WriteLine("Enter - Park Time between 0 and 24 (HOURS):");
20. parkTime = decimal.Parse(Console.ReadLine());
21. }
22. if (parkTime > 8)
23. {
24. Console.Write("Total fee is $" + MAX_FEE);
25. }
26. else
27. {
28. parkFee = Math.Ceiling(parkTime) * HOURLY_RATE;
29. Console.Write("Parking Fee = $" + parkFee);
30. }
32. }
33. }
34. }