// FILE: prcsemp1.cc
// PROCESS ALL EMPLOYEES AND COMPUTE TOTAL PAYROLL AMOUNT

#include "copyline.cc"
#include "skipnwln.cc"

void process_emp
  (ifstream& eds,              // IN: employee file stream
   ofstream& pds,              // OUT: payroll file stream
   float& payroll)             // OUT: total company payroll

// Pre:  eds and pds are prepared for input/output.
// Post: All employee data are copied from eds to pds and
//       the sum of their salaries is returned through payroll.
// Uses: copy_line(); skip_new_line;
{
   // Functions used ...
   // COPY ONE LINE OF TEXT
   int copy_line
     (ifstream&,               // IN: employee file stream
      ofstream&);              // OUT: payroll file stream

   // SKIP NEW LINE
   void skip_newline
      (ifstream&);             // IN: stream to file involved

   // Local data ...
   float hours;                // input: hours worked.
   float rate;                 // input: hourly rate.
   float salary;               // output: gross salary.

    // set for floating point output
   pds.precision (2);
   pds.setf (ios::fixed | ios::showpoint);

   payroll = 0.0;
   while (!eds.eof ())
   {
      // Copy employee name.
      copy_line (eds, pds);
      if (eds.eof ())
         break;
      // Get salary data.
      eds >> hours >> rate;
      if (eds.eof ())
         break;
      skip_newline (eds);
      salary = hours * rate;
      pds << salary << endl;
      payroll += salary;
   }  // end while
   return;
}  // end process_emp