Question

I'm a C++ beginner, I'm not sure how to do this.

Calculate the amount a customer should be charged at a gas station.

Fees for the car wash are $4.25 with gasoline purchase of $35.00 or more and $10.00

otherwise. Three kinds of gasoline are available: regular at 3.39, unleaded at 3.55 and

premium at 3.65 per gallon. Input consists of the customer number, number of gallons

purchased, kind of gasoline purchased (R, U, P, or, for no purchase, N), and car wash

desired (Y or N).

You are in charge of completely testing the program. Do not forget to include input

validation for incorrect values. Run your program at least six times with the test data

shown below for gas type, gallons, and car wash in this order:

1. P 10.02 Y

2. r 15.50 N

3. U 19.00 y

4. R 6.50 y

5. n Y

6. N n

The program is to prompt the user for the input as shown below:

Gas type (R, U, P, N) : P

Number of gallons : 10.02

Car wash? [Y/N] : Y

Write the bill to an output file as shown below. Be careful to align the decimal points. Prompt the user to enter the name of the output file. * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * ** * * ** * * * * Best Gas and Wash Service Station ************************************* * Gallons purchased: Price per gallon : 10.02 3.23 Total gasoline cost: 32.36 Car wash cost: 3.25 ------ Total due: 35.61 * * * * ** * * ** * * * * * * * ** * * ** * * * * * * * ** * * * * * * Thank you for stopping! Have a nice day and come again! * * * ** * * ** * * * ** * * ** *
If the user chooses gas type: 'N', the number of gallons should be set to 0.

Write the bill to an output file as shown below. Be careful to align the decimal points.

Prompt the user to enter the name of the output file.

Answer 1

if you have any query comment down below and Thumbs Up

Code:

#include<iostream>

#include<fstream>

#include<string>

using namespace std;

void writeData(double gallonePurchased, double pricePerGallon, double totalGasolinecost, double carWashCost,double totalDue) {

cin.ignore();

  cout << "Enter the Name Of Output file : ";

  string outputFile;

  getline(cin, outputFile);

  outputFile = outputFile + ".txt";

  ofstream outFile;

  outFile.open(outputFile.c_str(),ios::app);

  outFile << "********************************\n";

  outFile << "* Best Gas And Wash *\n";

  outFile << "* Service Station *\n";

  outFile << "********************************\n";

  outFile << "\n\n";

  outFile << "\tGallons Purchased:\t" << gallonePurchased << "\n";

  outFile << "\tPrice per gallon :\t" << pricePerGallon << "\n";

  outFile << "\n\n";

  outFile << "\tTotal gasoline cost :\t" << totalGasolinecost << "\n";

  outFile << "\tCar Wash cost : \t\t\t" << carWashCost << "\n";

  outFile << "\t\t\t\t\t\t\t\t\t\t\t------\n";

  outFile << "\t\t\t\t\t\tTotal due : " << totalDue << "\n";

  outFile << "********************************\n";

  outFile << " * Thank you for stopping ! *\n";

  outFile << " * Have a nice day *\n";

  outFile << " * and *\n";

  outFile << " * come again! *\n";

  outFile << " **********************\n";

  outFile.close();

}

int main() {

  char choice,choice2;

  double gallonePurchased=0, pricePerGallon=0, totalGasolinecost=0, carWashCost=10, totalDue=0;

  cout << "Gas Type (R,U,P,N) : ";

  cin >> choice;

  switch (choice)

  {

  case 'R':

  case 'r':

    cout << "Number of gallons :";

    cin >> gallonePurchased;

    pricePerGallon = 3.39;

    totalGasolinecost = pricePerGallon * gallonePurchased;

    break;

  case 'U':

  case 'u':

    cout << "Number of gallons :";

    cin >> gallonePurchased;

    pricePerGallon = 3.55;

    totalGasolinecost = pricePerGallon * gallonePurchased;

    break;

  case 'P':

  case 'p':

    cout << "Number of gallons :";

    cin >> gallonePurchased;

    pricePerGallon = 3.65;

    totalGasolinecost = pricePerGallon * gallonePurchased;

    break;

  case 'N':

  case 'n':

    totalGasolinecost = pricePerGallon * gallonePurchased;

    break;

  default:

    cout << "You Enter the Wrong Choice So It considered as No \n";

    break;

  }

  cout << "Car Wash[Y/N] :";

  cin >> choice2;

  switch (choice2)

  {

  case 'Y':

  case 'y':

    if (gallonePurchased >= 35) {

      carWashCost = 4.25;

      totalDue = totalGasolinecost +carWashCost;

    }

    else

    {

      totalDue = totalGasolinecost + carWashCost;

    }

    break;

  case 'N':

  case 'n':

carWashCost=0;

totalDue = totalGasolinecost + carWashCost;

    break;

  default:

    cout << "You Enter the Wrong Choice So It considered as No \n";

    break;

  }

  writeData(gallonePurchased, pricePerGallon,totalGasolinecost,carWashCost,totalDue);

  return 0;

}

SS of output:

Gas Type (R,U,P,N) :P Number of gallons : 10.02 Car Wash[y/N] :Y Enter the Name Of Output file : output

Best Gas And Wash Service Station Gallons Purchased: 10.02 Price per gallon : 3.65 Total gasoline cost : 36.573 Car Wash cost : 10 Total due : 46.573 * Thank you for stopping ! * Have a nice day and come again!

Gas Type (R,U,P,N) : 1 Number of gallons -15.50 Car Wash[y/N] :N Enter the Name of Output file : output

* * * * ** * ** * * ** * * ** * ** * * * ** * * * * * Best Gas And Wash Service Station Gallons Purchased: Price per gallon : 15.5 3.39 Total gasoline cost : 52.545 Car Wash cost: 0 Total due : 52.545 * * * Thank you for stopping ! Have a nice day and come again!

.

Gas Type (R,U,P,N) : U Number of gallons - 19.00 Car Wash(Y/N) :Y Enter the Name of Output file : output

Best Gas And Wash Service Station Gallons Purchased: Price per gallon : 19 3.55 Total gasoline cost : 67.45 Car Wash cost : 10 Total due : 77.45 * Thank you for stopping ! * Have a nice day * and come again!

Gas Type (R,U,P,N) : R Number of gallons :6.50 Car Wash[y/N] =y Enter the Name of Output file : output

Best Gas And Wash Service Station Gallons Purchased: 6.5 Price per gallon : 3.39 Total gasoline cost: 22.035 Car Wash cost : Total due : 32.035 * Thank you for stopping ! * Have a nice day and come again!

Gas Type (R,U,P,N) :n Car Wash[y/N] :Y Enter the Name of Output file : output

Best Gas And Wash Service Station Gallons Purchased: 0 Price per gallon : 0 Total gasoline cost : 0 Car Wash cost : 10 Total due : 10 * Thank you for stopping ! * Have a nice day and come again!

Gas Type (R,U,P,N) : 0 Car Wash(Y/N) :D Enter the Name of Output file : output

Best Gas And Wash Service Station Gallons Purchased: 0 Price per gallon : 0 Total gasoline cost : 0 Car Wash cost : Total due : 0 * Thank you for stopping ! * Have a nice day and come again!