/* 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\\cis1_5\\newpgms\\chapter3\\myinput.txt"); //comment-out for debugging
//        ifstream infile("con");                    //un-comment for debugging
        
        // declare and open the output file
		ofstream outfile("c:\\bc\\cis1_5\\newpgms\\chapter3\\myoutput.txt"); //comment-out for debugging
//        ofstream outfile("con");                    //un-comment for debugging
        
		outfile.setf(ios::fixed,ios::floatfield);
		outfile.precision(2);                       //set decimal precision

		outfile << "\t\t\tPayroll Table" << endl << endl;
        outfile << "Employee ID\tHours Worked\tRate of Pay\tGross Pay\tTax\tNet Pay" << endl;

		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

            cout << endl;                           //needed when output goes to monitor
			outfile.width(7);
			outfile << id;
			outfile.width(18);
			outfile << hours;
			outfile.width(16);
			outfile << rate;
			outfile.width(15);
			outfile << pay;
			outfile.width(12); 
			outfile << tax;
			outfile.width(11);
			outfile << netpay << 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");
		return 0;
	}