Question

Remember that great app you wrote for Yogurt Yummies (Lab 10-2). They want you to enhance the C++ console application that calculates and displays the cost of a customer’s yogurt purchase. Now they need to process multiple sales. Do not change any logic for handling a single sale. Make the following enhancements:

          ● Add "v2" to the application output header and close.

          ● Declare and initialize overall totals including:

                    ü Number of sales.

                    ü Overall number of yogurts sold.

                    ü Overall sale amount after discount.

                    ü Overall tax paid.

                    ü Overall sale total.

          ● Enclose the logic for a single sale with a sentinel loop that continues to process sales until the user enters 'n'.

          ● After calculating sale totals, update overall totals.

          ● When the user enters the sentinel value ('n'), print overall totals using formatted output manipulators (setw, left/right). Run the program with invalid and valid inputs, and at least three sales. The output should look like this:

Welcome to Yogurt Yummies, v2

-----------------------------

Enter another yogurt purchase (y/n)? y

Sale 1

----------------------------------------

Enter the number of yogurts purchased (1-9): 11

Error: '11' is an invalid number of yogurts.

Enter the number of yogurts purchased (1-9): 2

Enter the percentage discount (0-20): 22

Error: '22.00' is an invalid percentage discount.

Enter the percentage discount (0-20): 4

Yogurts:                             2

Yogurt cost ($):                  3.50

Discount (%):                     4.00

Subtotal ($):                     7.00

Total after discount ($):         6.72

Tax ($):                          0.40

Total ($):                        7.12

Enter another yogurt purchase (y/n)? y

Sale 2

----------------------------------------

Enter the number of yogurts purchased (1-9): 5

Enter the percentage discount (0-20): 10

Yogurts:                             5

Yogurt cost ($):                  3.50

Discount (%):                    10.00

Subtotal ($):                    17.50

Total after discount ($):        15.75

Tax ($):                          0.94

Total ($):                       16.70

Enter another yogurt purchase (y/n)? y

Sale 3

----------------------------------------

Enter the number of yogurts purchased (1-9): 7

Enter the percentage discount (0-20): 20

Yogurts:                             7

Yogurt cost ($):                  3.50

Discount (%):                    20.00

Subtotal ($):                    24.50

Total after discount ($):        19.60

Tax ($):                          1.18

Total ($):                       20.78

Enter another yogurt purchase (y/n)? n

Overall totals

========================================

Sales:                               3

Yogurts:                            14

Total after discount ($):        42.07

Tax ($):                          2.52

Total ($):                       44.59

End of Yogurt Yummies, v2

This is from yogurt Yummies V1

Welcome to Yogurt Yummies

-------------------------

Enter the number of yogurts purchased (1-9): 12

Error: '12' is an invalid number of yogurts.

Enter the number of yogurts purchased (1-9): 4

Enter the percentage discount (0-20): 30

Error: '30.00' is an invalid percentage discount.

Enter the percentage discount (0-20): 10

Yogurts:                             4

Yogurt cost ($):                  3.50

Discount (%):                    10.00

Subtotal ($):                    14.00

Total after discount ($):        12.60

Tax ($):                          0.76

Total ($):                       13.36

End of Yogurt Yummies

Answer 1

PLEASE GIVE IT A THUMBS UP, I SERIOUSLY NEED ONE, IF YOU NEED ANY MODIFICATION THEN LET ME KNOW, I WILL DO IT FOR YOU

#include <iostream>
#include <iomanip>
#define COST 3.50
#define TAX 0.06
using namespace std;

// Function to accept number of yogurts from the user and validates
// returns the number of yogurts by using pass by reference
void acceptNumberOfYogurts(int &numberOfYogurts)
{
  // Loops till valid number of yogurts entered by the user
  do
  {
    // Accepts number of yogurts
    cout << "\n Enter the number of yogurts purchased (1-9): ";
    cin >> numberOfYogurts;

    // Checks if number of yogurts is greater than or equals to 1
    // and number of yogurts is less than or equals to 9
    if (numberOfYogurts >= 1 && numberOfYogurts <= 9)
      // Come out of the loop for valid data
      break;
    // Otherwise invalid data display error message
    else
      cout << "\n Error: \'" << numberOfYogurts << "\' is an invalid number of yogurts.";
  } while (1); // End of do - whil loop
} // End of function

// Function to accept percentage discount from the user and validates
// returns the percentage discount by using pass by reference
void acceptPercentageDiscount(double &percentageDiscount)
{
  // Loops till valid percentage discount entered by the user
  do
  {
    // Accepts percentage discount
    cout << "\n Enter the percentage discount (0 - 20): ";
    cin >> percentageDiscount;

    // Checks if percentage discount is greater than or equals to 0
    // and percentage discount is less than or equals to 20
    if (percentageDiscount >= 0 && percentageDiscount <= 20)
      // Come out of the loop for valid data
      break;
    // Otherwise invalid data display error message
    else
      cout << "\n Error: \'" << percentageDiscount << "\' is an invalid percentage discount.";
  } while (1); // End of do - whil loop
} // End of function

// main function definition
int main()
{
  int numberOfYogurtsPurchased;
  double percentageDiscount;

  int countSales = 0;
  int totalYogurts = 0;

  double subTotal = 0.0;
  double afterDiscount = 0.0;
  double tax = 0.0;
  double total = 0.0;

  double totalAfterDiscount = 0.0;
  double totalTax = 0.0;
  double overalTotal = 0.0;
  char choice;
  cout<<"Welcome to Yogurt Yummies, v2\n-----------------------------\n";
  // Loops till user choice is not equals to 'n' or 'N'
  do
  {
    // Accepts user choice
    cout << "\n Enter another yogurt purchase (y/n)? ";
    cin >> choice;

    // Checks if user choice is equals to 'n' or 'N' then come out of the loop
    if (choice == 'n' || choice == 'N')
      break;

    // Displays sales counter
    cout << "\n Sales: " << ++countSales;
    cout << "\n ----------------------------------------";
    // Calls the function to accept number of yogurts purchased
    acceptNumberOfYogurts(numberOfYogurtsPurchased);
    // Calls the function to accept percentage discount
    acceptPercentageDiscount(percentageDiscount);

    // Calculates to total number of yogurts purchased
    totalYogurts += numberOfYogurtsPurchased;
    // Calculates sub total by multiplying number of yogurts purchased with cost per of yogurts purchased
    subTotal = numberOfYogurtsPurchased * COST;
    // Calculate amount after discount
    afterDiscount = subTotal - (subTotal * percentageDiscount) / 100.0;
    // Calculates tax
    tax = (afterDiscount * TAX);
    // Calculates total
    total = afterDiscount + tax;

    // Displays current purchase report
    cout << left << setw(28) << "\n Yogurts: " << right << numberOfYogurtsPurchased;
    cout << left << setw(28) << "\n Yogurt cost ($): " << right << fixed << setprecision(2) << COST;
    cout << left << setw(28) << "\n Discount (%): " << right << percentageDiscount;
    cout << left << setw(28) << "\n Subtotal ($): " << right << subTotal;
    cout << left << setw(28) << "\n Total after discount ($): " << right << afterDiscount;
    cout << left << setw(28) << "\n Tax ($): " << right << tax;
    cout << left << setw(28) << "\n Total ($): " << right << total;

    // Calculates total of after discount
    totalAfterDiscount += afterDiscount;
    // Calculates total tax
    totalTax += tax;
    // Calculates overall total
    overalTotal += total;

  } while (1); // End of do - while loop

  // Displays overall report
  cout << "\n Overall totals";
  cout << "\n ========================================";
  cout << left << setw(28) << "\n Sales: " << right << countSales;
  cout << left << setw(28) << "\n Yogurts: " << right << totalYogurts;
  cout << left << setw(28) << "\n Total after discount ($): " << right << totalAfterDiscount;
  cout << left << setw(28) << "\n Tax ($): " << right << setprecision(2) << totalTax;
  cout << left << setw(28) << "\n Total ($): " << right << setprecision(2) << overalTotal;
  return 0;
} // End of function