/* payroll program with tax deductions
 * illustrate file I/O
 */
#include <iostream>
#include <fstream>
using namespace std;
int main()
{
    int id;                                     //employee id
    double hours,rate,pay,tax,netpay;
    int numemp = 0;                             //count the employees

    // declare and open the input file
    ifstream infile("c:\\bc\\CISC1110\\pgms\\chapter3\\myinput.txt"); //comment-out for debugging
    //ifstream infile("con");                     //un-comment for debugging
    //ifstream infile("/bc/CISC1110/pgms/chapter3/myinput.txt"); //for Mac users
    //ifstream infile("/dev/stdin");                     //for Mac users

    // declare and open the output file
    ofstream outfile("c:\\bc\\CISC1110\\pgms\\chapter3\\myoutput.txt"); //comment-out for debugging
    //ofstream outfile("con");                    //un-comment for debugging
    //ofstream outfile("/bc/CISC1110/pgms/chapter3/myoutput.txt"); //for Mac users
    //ofstream outfile("/dev/stdout");                    //for Mac users

    outfile.setf(ios::fixed,ios::floatfield);
    outfile.precision(2);                       //set decimal precision

    cout << "Please enter an ID (enter -1 to stop): ";
    infile >> id;                               //read ID
    while (id != -1) {                          //check for fake ID
        cout << "Please enter the hours worked: ";
        infile >> hours;                        //read hours worked
        cout << "Please enter the rate of pay: ";
        infile >> rate;                         //read rate of pay
        pay = hours * rate;                     //calculate pay
        tax = (pay < 300) ? 0.15 * pay : 0.28 * pay;    //calculate tax
        netpay = pay - tax;                     //calculate the net pay
        outfile << "Employee " << id << " worked " << hours
            << " hours at a rate of pay of $" << rate
            << " earning $" << pay << endl;
        outfile << "tax withheld was $" << tax << " leaving net pay"
            <<" of $" << netpay << endl << endl;
        numemp++;                               //increment counter
        cout << "Please enter an ID (enter -1 to stop): ";
        infile >> id;                           //read new ID
    }
    outfile << "\nWe have processed " << numemp << " employees" << endl;

    infile.close();                             //close the input file
    outfile.close();                            //close the output file

//  system("pause");                            //un-comment when using DevC++
    return 0;
}