// This program uses hours, pay rate, state tax and fed tax to determine gross /

Question

// This program uses hours, pay rate, state tax and fed tax to determine gross

// and net pay.

#include <fstream>

#include <iostream>

#include <iomanip>

using namespace std;

int main()

{

// Fill in the code to define payfile as an input file

float gross;

float net;

float hours;

float payRate;

    float stateTax;

float fedTax;

cout << fixed << setprecision(2) << showpoint;

// FILL IN THE CODE TO OPEN payfile AND ATTACH IT TO THE PHYSICAL FILE

    // NAMED payroll.dat

// FILL IN CODE TO WRITE A CONDITIONAL STATEMENT TO CHECK IF payfile

// DOES NOT EXIST.

{

cout << "Error opening file. ";

cout << "It may not exist where indicated" << endl;

return 1;

}

cout << "Payrate      Hours    Gross Pay       Net Pay"

           << endl   << endl;      

     // FILL IN CODE TO PRIME THE READ FOR THE payfile FILE.

     // FILL IN CODE TO WRITE A LOOP CONDITION TO RUN WHILE payfile HAS MORE

     // DATA TO PROCESS.

{

   payfile >> payRate >> stateTax >> fedTax;

   gross = payRate * hours;

   net = gross - (gross * stateTax) - (gross * fedTax);

   cout << payRate << setw(15) << hours << setw(12) << gross

              << setw(12)  << net << endl;

   payfile >> // FILL IN THE CODE TO FINISH THIS WITH THE APPROPRIATE  

          // VARIABLE TO BE INPUT

}

      payfile.close();

      return 0;

}

Explanation / Answer

#include <fstream>
#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
// Fill in the code to define payfile as an input file
float gross;
float net;
float hours;
float payRate;
float stateTax;
float fedTax;
cout << fixed << setprecision(2) << showpoint;
// FILL IN THE CODE TO OPEN payfile AND ATTACH IT TO THE PHYSICAL FILE
// NAMED payroll.dat
ifstream payfile("payroll.dat");
// FILL IN CODE TO WRITE A CONDITIONAL STATEMENT TO CHECK IF payfile
// DOES NOT EXIST.
if(!payfile)
{
cout << "Error opening file. ";
cout << "It may not exist where indicated" << endl;
return 1;
}
cout << "Payrate Hours Gross Pay Net Pay" << endl << endl;
// FILL IN CODE TO PRIME THE READ FOR THE payfile FILE.
payfile >> hours;
// FILL IN CODE TO WRITE A LOOP CONDITION TO RUN WHILE payfile HAS MORE
// DATA TO PROCESS.
while(!payfile.eof())
{
payfile>> payRate >> stateTax >> fedTax;
gross = payRate * hours;
net = gross - (gross * stateTax) - (gross * fedTax);
cout << payRate << setw(15) << hours << setw(12) << gross<< setw(12) << net << endl;
payfile >> hours;// FILL IN THE CODE TO FINISH THIS WITH THE APPROPRIATE
// VARIABLE TO BE INPUT
}
payfile.close();
return 0;
}

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