How to stop an overloop output in a class? - c++

Question

So I have an assignment for a class where I have to convert an employee payroll program into a class. I've completed that part and can even generate an output, but the problem starts there. The output keeps looping. I've had this problem before when I had an earlier program and the way I set the while loop was wrong. But this time, the while statement is fine, but the program still loops. I've corrected other errors but still cannot find this one.
Here is the code I've come up with:
#include <iostream>
#include <fstream>
#include <string>
#include <iomanip>
#include <cmath>
#include <cstdlib>
using namespace std;
class payroll {
ifstream fin;
char employeeid[12];
char firstname[20];
char lastname[20];
char SMH;
int SSN, hoursworked, overtimehours;
double hourlyrate, regularpay, overtimepay, grosspay, taxrate, taxamount, netpay, sum, average;
public:
payroll(){
fin.open("employee.txt");
}//CONSTRUCTOR
~payroll();
private:
void calcgrosspay() {
grosspay = regularpay + overtimepay;
if (hoursworked > 40) {
overtimehours = hoursworked - 40;
overtimepay = overtimehours * hourlyrate * 1.5;
regularpay = 40 * hourlyrate;
}//if
else {
overtimehours = 0;
overtimepay = 0;
regularpay = hoursworked * hourlyrate;
}//else
}//for
void calctax() {
if (grosspay >= 500) taxrate = .30;
else if (grosspay>200.00) taxrate = .20;
else taxrate = .10;
if (SMH == 'S' || SMH == 's')
taxrate = taxrate + .05;
taxamount = grosspay*taxrate;
}//for end of grosspay and set taxrate FOR
void calcNetpay() {
netpay = grosspay - taxamount;
}//end of calcnetpay function
void printheadings() {
cout << setw(49) << "-Payroll Report-" << endl;
cout << "------------------------------------------------------------------------------" << endl;
cout << "ID First Name Last Name Stat SSN HW HR OT OP GP Tax Net" << endl;
cout << "==============================================================================" << endl;
cout << "------------------------------------------------------------------------------" << endl;
}//printheadings
void printdata() {
setprecision(2);
cout << setw(14) << employeeid
<< setw(16) << firstname
<< setw(15) << lastname
<< setw(6) << SMH
<< setw(5) << SSN
<< setw(6) << hoursworked
<< setw(6) << hourlyrate
<< setw(8) << grosspay
<< setw(6) << taxrate
<< setw(9) << regularpay
<< setw(6) << overtimehours
<< setw(6) << overtimepay
<< setw(9) << netpay << endl;
}//print data
void payroll::findsum(int i) {
sum += netpay;
}
double payroll::findavg(double, int i) {
average = sum / i;
cout << endl << "The netpay average is " << average << endl;
return average;
}
public:
void printreport() {
int i = 0;
printheadings();
while (fin >> employeeid >> SMH >> SSN >> hoursworked >> hourlyrate >> firstname >> lastname)
{
calcgrosspay();
calctax();
calcNetpay();
printheadings();
printdata();
i++;
findsum(i);
}//while
findavg(sum, i);
}//print data report
}; // end of payroll class
payroll::~payroll() {
fin.close();
}//DESTRUCTOR
int main() {
payroll employee;
employee.printreport();
system("PAUSE");
}//main