Rewrite this program (Chapter 4, Problem 1 programming assignment) that calculat

Question

Rewrite this program (Chapter 4, Problem 1 programming assignment) that calculates and prints the bill for a cellular telephone company as a modular program. The company offers two types of service: regular and premium. Its rates vary, depending on the type of service. The rates are computed as follows:

Your program should prompt the user to enter an account number, a service code (type char), and the number of minutes the service was used. A service code of r or R means regular service; a service code of p or P means premium service. Treat any other character as an error. Your program should output the account number, type of service, number of minutes the telephone service was used, and the amount due from the user. For the premium service, the customer may be using the service during the day and the night. Therefore, to calculate the bill, you must ask the user to input the number of minutes the service was used during the day and the number of minutes the service was used during the night.

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Your structure chart as a screen shot or picture

Your source code for with

The name of your program as a comment at the top of the file

Your IPO chart incorporated as comments after the name of the file

IPO charts for your functions as comments before the prototypes of your functions

A screen shot or picture of the results after running your program with your test data

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Explanation / Answer

#include <iostream.h>
#include <conio.h>

int main()
{
int accountNumber, regularMinutesUsed,premiumDayMinutes ,premiumNightMinutes ;
float totalBill= 0 ;
char serviceCode;

float REGULAR_ACCOUNT_FEE = 10.00;
float REGULAR_RATE = 0.20;
float PREMIUM_ACCOUNT_FEE = 25.00;
float PREMIUM_DAY_RATE = 0.10;
float PREMIUM_NIGHT_RATE = 0.05;

cout << "Please enter an account number and a service code: ";
cin >> accountNumber >> serviceCode;

switch (serviceCode) {

   case 'r':
   case 'R':
   cout << "Please enter the number of minutes used: ";
   cin >> regularMinutesUsed;
   if (regularMinutesUsed > 50) {
   totalBill = ((regularMinutesUsed - 50) * REGULAR_RATE) + REGULAR_ACCOUNT_FEE;
   } else {
       totalBill = REGULAR_ACCOUNT_FEE;
   }
   break;
   case 'p':
   case 'P':
   cout << "Please enter the number of day minutes used: ";
   cin >> premiumDayMinutes;
   cout << "Please enter the number of night minutes used: ";
   cin >> premiumNightMinutes;
   if (premiumDayMinutes > 75) {
       totalBill = (premiumDayMinutes - 75) * PREMIUM_DAY_RATE;
   }
   if (premiumNightMinutes > 100) {
       totalBill = (premiumNightMinutes - 100) * PREMIUM_NIGHT_RATE;
   }
   totalBill += PREMIUM_ACCOUNT_FEE;
   break;
   default:
   cout << "You have entered an invalid service code" << endl;
   return 1;
   break;
}
cout << "Your bill is: $" << totalBill << endl;
getch();

}

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