Question

Write a program in c++ for

An electric company came out with a residential rate schedule in your state. You are asked to write a program that will compute the customer’s electric bill. Program will prompt month number and Kilowatt hour used.

Sample Input Screen:

            Enter the month (1 - 12)                      :

            Kilowatt hours used                             :

The electric bill is computed using the following method:

1. There is a flat service charge of $15.31 per month.
2. Table below is used to determine the charge per kilowatt-hour (kwhr).

Kilowatt hours used	Charge per Kilowatt hour
1 - 500 kwhrs	12.9266 cents per kwhr
Over 500 kwhrs	10.9917 cents per kwhr

The program should have the capability to process multiple set of data. Use a do..while statement with the prompt message "Do you want to enter another set? (Y/N)”

You will incorporate an Error trap code to validate the (Y/N) response. If any character other than ‘Y’ or ‘N’ (Ex: s, p….) is entered as response; it will display the message "ERROR: Enter Y/N: “(Refer the tip)

Use system(“cls”); Before the display of the output screen. Use iomanip to display the dollar amounts in two digits after the decimal point. You are required to display the month name, Kilowatt hour used, Service charge, Usage cost and Total bill.

SAMPLE:

            Input data:

            Enter the month (1 - 12)                      :11

            Kilowatt hours used                             :1500

SAMPLE Display:

            Month                                     :November

            Kilowatt hours used                 :1500

            (……………..Blank Line…………………..)

            Flat Service Charge                                           15.31

            Kilowatt usage cost                                        164.88

           

            Total Bill                                              $180.19

TIPS:

1. (Use switch statement to determine the monthNmae)

switch (month)

{

         case 1: monthName = “January”;

         break;

         …

         …

}

2. // Does the user want to enter another set of data?

       cout << "Do you want to enter another set? (Y/N)”;

       cin >> again;

       again = toupper(again);

       while ((again != 'Y') && (again != 'N')) //ERROR TRAP

       {

              cout << "ERROR: Enter Y/N: ";

              cin >> again;

              again = toupper(again);

       }

Answer 1

#include <iostream>
#include <iomanip>

using namespace std;

int main() {
        string months[] = {"", "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};

        char again;
        int month;
        double charges, kw, total;

        do {
                cout << setw(25) << left << "Enter the month(1-12)" << ":";
                cin >> month;
                cout << setw(25) << left << "Kilowatt hours used " << ":";
                cin >> kw;

                if(kw <= 500) {
                        charges = kw * 12.9266 / 100;
                } else {
                        charges = (kw * 10.9917) / 100;
                }
                total = charges + 15.31;

                cout << setprecision(2) << fixed;

                cout << endl;
                cout << setw(25) << left << "Month" << ":" << months[month] << endl;
                cout << setw(25) << left << "Kilowatt hours used" << ":" << kw << endl;
                cout << endl;
                cout << setw(25) << left << "Flat Service Charge" << 15.31 << endl;
                cout << setw(25) << left << "Kilowatt usage cost" << charges << endl;
                cout << setw(25) << left << "Total Bill" << total << endl;

                cout << endl;

                cout << "Do you want to enter another set? (Y/N)";
                cin >> again;
                again = toupper(again);

                while ((again != 'Y') && (again != 'N')){
                        cout << "ERROR: Enter Y/N: ";
                        cin >> again;
                        again = toupper(again);
                }
        } while(again == 'Y');
}

Please upvote, as i have given the exact answer as asked in question. Still in case of any issues in code, let me know in comments. Thanks!