Answer to Question #253869 in C++ for Old Sport

Question

Write a program that simulates

a simple cash register. It should ask the user if a customer is to be

processed. If the user responds yes, prompts the user to enter the

price of the meal. Then it calculates the sales tax (8% of the meal price)

and the total price, which it should display to the user. Next, it asks the

user to enter the amount tendered, and displays the amount tendered, the total

price, and the customer’s change. The program then asks the user if there is

another customer to process. If the user responds yes, the program processes the

next customer in the same way. This procedure continues indefinitely until the

user responds no to the prompt for another customer. Finally, the program

displays the total number of customers it processed and the grand total of all the

meal prices. Input Validation: Do not accept a number less than 1 for the price of the meal. Do not accept a value for the amount tender that is less than the total price.

Answer 1

#include <iostream>
#include <iomanip>
using namespace std;


int main()
{
    double change, totalAmount, amount, price, tax;
    double SALES_TAX = .08;
    char choice, selection;


    cout << "Would you like to process a transaction? (Y/N) ";
    cin >> selection;
    if (selection == 'y' || selection == 'Y')
    {
        do
        {
            cout << " \nPrice of the meal $ ";
            cin >> price;
            tax = SALES_TAX * price;
            totalAmount = price + tax;


            cout << setprecision(2) << fixed;
            cout << " \nSales tax $ " << tax << endl
                 << endl;
            cout << "totalAmount amount $ " << totalAmount << endl;


            cout << "\nAmount:";
            cin >> amount;


            if (amount > totalAmount)
            {
                cout << setprecision(2) << fixed;
                change = amount - totalAmount;
                cout << " \nChange $ " << change << endl;
            }
            else if (amount < totalAmount)
            {
                cout << " \nError: Amount have to be more than the total bill " << endl;
            }
            else if (amount == totalAmount)
            {
                cout << "\nChange $ 0.00" << endl;
            }


            cout << "\n\nDo you want to process another transaction? (Y/N) ";
            cin >> choice;
        } while (choice == 'Y' || choice == 'y');
        cout << "\nThe End" << endl
             << endl;
    }
    else
        cout << "\nThe End" << endl
             << endl;


    return 0;
}