Download the files.cpp program and the payroll.dat file. Follow the instructions described in the comments of file.cpp to successfully print out the data requested. Make sure that user output is easy to read and grammatically correct.

Starting Code: files.cpp Download files.cpp$,$ payroll.datp

Change the data in the payroll.dat file and test the program again. Verify your outputs using a calculator to ensure that your program is performing the calculations correctly. Make adjustments as necessary.

files.cpp $=$

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

$//$ and net pay.

#include

#include

#include

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 $0$;

$\}$

payroll.dat $=$

$12$

$0\mathrm{.}06$

$0\mathrm{.}12$