Question

IN JAVA PLEASE Design (pseudocode) and implement (source code) a program (name it PhoneBill) that calculates the bill for a cellular telephone company. The company offers two types of service: regular service and premium service. The rates vary depending on the type of service. The rates are computed as follows: Regular service: $15.00 fee covering first 50 minutes. Charges for over 50 minutes are computed at the rate of $0.50 per minute. Premium service: $25.00 fee plus: a. For daytime calls (between 6:00AM to 6:00PM), the first 50 minutes are free; charges for over 50 minutes are computed at the rate of $0.20 per minute. b. For nighttime calls (between 6:00PM to 6:00AM), the first 100 minutes are free; charges for over 100 minutes are computed at the rate of 0.10 per minute. The program prompts the user to enter an account number, a service code (of type char), and the number of minutes the service was used. A service code r (or R) means regular service; while code p (or P) means premium service. If the service is premium (code p or P), the customer may be using the service during both the day and night. Therefore, the program must ask the user to input the number of minutes used during daytime and nighttime in separate prompts. Document your code and properly label the input prompts and the outputs as shown below. Sample run 1: Account Number: 12345 Service type: Regular Total minutes: 50 Amount due: $15.00 Sample run 2: Account Number: 32145 Service type: Premium Daytime minutes: 40 Nighttime minutes: 200 Amount due: $35.00 Sample run 3: Account Number: 78654 Service type: Premium Daytime minutes: 60 Nighttime minutes: 120 Amount due: $29.00

Answer 1

Below is the solution:

package HomeworkLib;

import java.util.Scanner;

public class PhoneBill {
   // declare the constant variable for the day,night call rates and minutes
   final static double REG_CHARGES = 15.00;
   final static int REG_MINUTES = 50;
   final static double REG_RATE_OVER_50 = 0.50;

   final static double PREM_SERV_CHARGES = 25.00;
   final static int PREM_FREE_DAY_MINUTES = 50;
   final static double PREM_DAY_RATE_OVER_50 = 0.20;

   final static int PREM_FREE_NIGHT_MINUTES = 100;
   final static double PREM_NIGHT_RATE_OVER_100 = 0.10;

   static Scanner input = new Scanner(System.in); // scanner object for input

   public static void main(String[] args) {
       // declare for input and calculate the due amount
       int account;
       char service_type;
       double amount_due = 0;

       System.out.print("Enter Account Number :"); // input account number
       account = input.nextInt();

       System.out.print("Enter Service Type:R or r (Regular Service) P or p (Premium Service): "); // enter service
                                                                                                   // type
       service_type = input.next().charAt(0);

       switch (service_type) { // switch case for select service type
       case 'r':
       case 'R':

           amount_due = regular(); // call the function to calculate the regular amount due
           // print the account number and due amount
           System.out.println("Account Number: " + account);
           System.out.println("Amount Due: $" + amount_due);
           break;
       case 'p':
       case 'P':

           amount_due = premium(); // call the function to calculate the premium amount due
           // print the account number and due amount
           System.out.println("Account Number: " + account);
           System.out.println("Amount Due: $" + amount_due);
           break;
       default:
           System.out.println("Invalid customer type."); // if invalid customer type
       }
   }

   // method for calculate the regular
   static double regular() {
       int minutes; // input minutes from user
       double bAmount; // calullate the due amount variable

       System.out.print("Enter Number of Minutes"); // input minutes
       minutes = input.nextInt();

       while (minutes < 0) { // enter minut if less than 0
           System.out.print("Enter Number of Minutes");
           minutes = input.nextInt();
       }
       // calculate the regular minute
       if (minutes <= REG_MINUTES)
           bAmount = REG_CHARGES;
       else
           bAmount = REG_CHARGES + (minutes - REG_MINUTES) * REG_RATE_OVER_50;
       System.out.println("Service Type: Regular");

       return bAmount;
   }

   // method for calculate the premium
   static double premium() {
       int day_minutes, night_minutes; // input minutes for day and night from user variable
       double bAmount;

       // input minutes for day and night from user
       System.out.print("Enter day time minutes used: ");
       day_minutes = input.nextInt();

       System.out.print("Enter night time minutes used: ");
       night_minutes = input.nextInt();

       bAmount = PREM_SERV_CHARGES;

       if (day_minutes > PREM_FREE_DAY_MINUTES)
           bAmount = bAmount + (day_minutes - PREM_FREE_DAY_MINUTES) * PREM_DAY_RATE_OVER_50;

       if (night_minutes > PREM_FREE_NIGHT_MINUTES)
           bAmount = bAmount + (night_minutes - PREM_FREE_NIGHT_MINUTES) * PREM_NIGHT_RATE_OVER_100;

       System.out.println("Service Type: Premium");
       System.out.println("Minutes Service Used (Day): " + day_minutes);
       System.out.println("Minutes Service Used (Night): " + night_minutes);

       return bAmount;

   }

}

output:

Enter Account Number :12345
Enter Service Type:R or r (Regular Service) P or p (Premium Service): r
Enter Number of Minutes:50
Service Type: Regular
Account Number: 12345
Amount Due: $15.0

Enter Account Number :32145
Enter Service Type:R or r (Regular Service) P or p (Premium Service): p
Enter day time minutes used: 40
Enter night time minutes used: 200
Service Type: Premium
Minutes Service Used (Day): 40
Minutes Service Used (Night): 200
Account Number: 32145
Amount Due: $35.0

Enter Account Number :78654
Enter Service Type:R or r (Regular Service) P or p (Premium Service): P
Enter day time minutes used: 60
Enter night time minutes used: 120
Service Type: Premium
Minutes Service Used (Day): 60
Minutes Service Used (Night): 120
Account Number: 78654
Amount Due: $29.0