#include <iostream> 
#include <fstream> 
#include <iomanip> 
#include <string> 

using namespace std; 

void handleData(int& id, char& empType, double& empRate, double& emp401K, int& empDependents, 
                double& empYTDHours, double& empYTDGross, string& empName, char def, double& federal, 
                double& state, double& FICA, double& medicare, double& depDeduct, double& FICALimit, 
                int hoursId, double hours, double& gross, double hEmpTotal, double sEmpTotal, 
                double& totalFederal, double& totalState, double& totalFICA, double& totalMedicare, 
                double& retirement, double& totalDependents, double& net, ifstream& Employee, 
                ifstream& Hours, ifstream& Taxes, ofstream& Register); 

void calculations(double& gross, double& emp401K, int& empDependents, double& depDeduct, double& federal, 
                  double& state, double& FICA, double& medicare, double& retirement, 
                  double& totalDependents, double& totalFederal, double& totalState, double& totalFICA, 
                  double& totalMedicare, double& net); 

int main() 
{ 
    //declare variables 
    int id = 0; 
    char empType = ' '; 
    double empRate = 0; 
    double emp401K = 0; 
    int empDependents = 0; 
    double empYTDHours = 0; 
    double empYTDGross = 0; 
    string empName = "hello"; 
    double hours = 0; 
    char def = ' '; 
    double federal = 0; 
    double state = 0; 
    double FICA = 0; 
    double medicare = 0; 
    double FICALimit = 0; 
    double depDeduct = 0; 
    int hoursId = 0; 
    double gross = 0; 
    double hEmpTotal = 0; 
    double sEmpTotal = 0; 
    double totalFederal = 0; 
    double totalState = 0; 
    double totalFICA = 0; 
    double totalMedicare = 0; 
    double totalDependents = 0; 
    double retirement = 0; 
    double net = 0; 

    //Declare infiles and outfile 
    ifstream Employee;  //input employee information 
    ifstream Hours; // input hours file 
    ifstream Taxes; // input taxes file 
    ofstream Register; //output file 

    Employee.open("e://Employee.txt"); 
    Hours.open("e://Hours.txt"); 
    Taxes.open("e://Taxes.txt"); 
    Register.open("e://Register.txt"); 

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

    handleData(id, empType, empRate, emp401K, empDependents, empYTDHours, empYTDGross, empName, def, 
               federal, state, FICA, medicare, depDeduct, FICALimit, hoursId, hours, gross, 
               hEmpTotal, sEmpTotal, totalFederal, totalState, totalFICA, totalMedicare, retirement, 
               totalDependents, net, Employee, Hours, Taxes, Register); 

    return 0; 
} 

void handleData(int& id, char& empType, double& empRate, double& emp401K, int& empDependents, 
                double& empYTDHours, double& empYTDGross, string& empName, char def, double& federal, 
                double& state, double& FICA, double& medicare, double& depDeduct, double& FICALimit, 
                int hoursId, double hours, double& gross, double hEmpTotal, double sEmpTotal, 
                double& totalFederal, double& totalState, double& totalFICA, double& totalMedicare, 
                double& retirement, double& totalDependents, double& net, ifstream& Employee, 
                ifstream& Hours, ifstream& Taxes, ofstream& Register) 
{ 
     
    cout << "Processing data..." << endl; 

    while (Taxes) 
    { 
        Taxes >> def; 
            //import tax and percentages in the same order of the given Taxes file 
            if(def == 'F') 
            { 
            Taxes >> federal; 
            } 
            else if(def == 'S') 
            { 
            Taxes >> state; 
            } 
            else if(def == 'R') 
            { 
            Taxes >> FICA; 
            } 
            else if(def == 'M') 
            { 
            Taxes >> medicare; 
            } 
            else if(def == 'D') 
            { 
            Taxes >> depDeduct; 
            depDeduct = depDeduct / 52; 
            } 
            else if(def == 'L') 
            { 
            Taxes >> FICALimit; 
            } 
    } //end while 

    Register << left; 
    Register << setw(8) << "ID" << setw(29) << "Name" << setw(11) << "Gross" << setw(9) << "Federal" 
             << setw(9) << "State" << setw(9) << "FICA" << setw(9) << "Medicare" << setw(13) 
             << "Retirement" << setw(10) << "Net Pay" << setw(10) << endl << endl; 

    while (Employee && Hours) //This is where I pull the data in from the files 
    { 
        Employee >> id >> empType >> empRate >> emp401K >> empDependents >> empYTDHours >> empYTDGross; 
        getline(Employee, empName); 

        Hours >> hoursId >> hours; 

        if(id == hoursId) //make sure the id's in the employee and hours file match up 
        { 
            if(empType == 'H') //calculate overtime for hourly employees if applicable 
            { 
                if(hours <= 40) //no overtime 
                { 
                    gross = empRate * hours; 
                    hEmpTotal = gross + hEmpTotal; 
                } //end 2nd inner if 

                else //employees that qualify for overtime pay 
                { 
                    gross = hours - 40; 
                    gross = (empRate/2 + empRate) * gross; //Time and a half 
                    gross = empRate * 40 + gross; 
                } //end else 
            }//end 1st inner if 

            else if(empType == 'S') 
            { 
                gross = empRate / 52; 
                sEmpTotal = gross + sEmpTotal; 
            }//end else if 

        if(FICALimit <=(empYTDGross * FICA)) 
        { 
            FICA = 0; //The FICA maximum has been met 
        } 
         
    }//end outer if 

    calculations(gross, emp401K, empDependents, depDeduct, federal, state, FICA, medicare, retirement, 
                 totalFederal, totalState, totalFICA, totalMedicare, totalDependents, net); 
     
    Register << left; //This is where I output the variables to the output file.  I get my last record outputted twice. 
    Register << setw(5) << id << setw(30) << empName << "$" << setw(10) << gross << "$" << setw(8) 
             << totalFederal << "$" << setw(8) << totalState << "$" << setw(8) << totalFICA << "$" 
             << setw(8) << totalMedicare << "$" << setw(12) << retirement << "$" << setw(8) << net 
             << setw(10) << endl; 
    Register << endl; 

    cout << fixed << showpoint; 
    cout << setprecision(2); 
    cout << left; 
    cout << " _________________________________________________________________" << endl; 
    cout << "\n| "<< setw(35) << id << setw(30) << empName << endl; 
    cout << "|" << endl; 
    cout << "| Deductions" << endl; 
    cout << "| Federal Tax: $" << setw(24) << totalFederal << "YTD Hours: " << empYTDHours << endl; 
    cout << "| State Tax:   $" << setw(24) << totalState << "YTD Gross: " << empYTDGross << endl; 
    cout << "| FICA:        $" << setw(24) << totalFICA << "Dependents: " << empDependents << endl; 
    cout << "| Medicare:    $" << totalMedicare << endl; 
    cout << "| 401K:        $" << retirement << endl; 
    cout << "|\t \t \t \t \tGross Pay: $" << empYTDGross << endl; 
    cout << "|\t \t \t \t \tNet Pay:   $" << net << endl; 
    cout << "_________________________________________________________________" << endl; 

    }//end while 

    Register << "TOTALS: " << endl; 
    Register << "Hourly Employees: $" << hEmpTotal << endl; //hourly employees first 
    Register << "Salary Employees: $" << sEmpTotal << endl; 
    Register << "\nGRAND TOTAL: $" << (hEmpTotal + sEmpTotal) << endl; 

    Employee.close(); 
    Hours.close(); 
} 

void calculations(double& gross, double& emp401K, int& empDependents, double& depDeduct, double& federal, 
                  double& state, double& FICA, double& medicare, double& retirement, double& totalFederal, 
                  double& totalState, double& totalFICA, double& totalMedicare, double& totalDependents, 
                  double& net) 
{ 
    totalFederal = gross * federal; 
    totalState = gross * state; 
    totalFICA = gross * FICA; 
    totalMedicare = gross * medicare; 
    retirement = gross * emp401K; 
    totalDependents = empDependents * depDeduct; 
    net = gross + totalDependents - totalFederal - totalState - totalFICA - totalMedicare - retirement; 
} 

while (Employee && Hours) //This is where I pull the data in from the files 
{ 
    Employee >> id >> empType >> empRate >> emp401K >> empDependents >> empYTDHours >> empYTDGross; 
    getline(Employee, empName); 

while (1) // start a 'forever' loop 
{ 
    Employee >> id >> empType >> empRate ...; 
    getline(Employee, empName); 
    if (!Employee) break;  // If error, done...