/* Exercise 4.28 Solution */
#include<stdio.h>

void
main ()
{
  int payCode, managers = 0, hWorkers = 0, cWorkers = 0;
  int pWorkers = 0, pieces;
  float mSalary, hSalary, cSalary, pSalary, hours;
  float otPay, otHours, pay;

  while (1) 
    {
      printf ("\nEnter paycode (-1 to end): ");
      scanf ("%d", &payCode);

      if (payCode == -1)
        break;
      
      switch (payCode) 
        {
        case 1:
          printf ("Manager selected.\n");
          printf ("Enter weekly salary: ");
          scanf ("%f", &mSalary);
          printf ("The manager's pay is $%.2f\n", mSalary);
          ++managers;
          break;
        case 2:
          printf ("Hourly worker selected.\n");
          printf ("Enter the hourly salary: ");
          scanf ("%f", &hSalary);
          printf ("Enter the total hours worked: ");
          scanf ("%f", &hours);
          if  (hours > 40.0) 
            {
              otHours = hours - 40.0;
              otPay = hSalary * 1.5 * otHours + hSalary * 40.0;
              printf ("Worker has worked %.1f overtime hours.\n", otHours);
              printf ("Workers pay is $%.2f\n", otPay);
            }
          else 
            {
              pay = hSalary * hours;
              printf ("Worker's pay is $%.2f\n", pay);
            }

          ++hWorkers;
          break;
        case 3:
          printf ("Commission worker selected.\n");
          printf ("Enter gross weekly sales: ");
          scanf ("%f", &cSalary);
          pay = 250.0 + 0.057 * cSalary;
          printf ("Commission Worker's pay is $%.2f\n", pay);
          ++cWorkers;
          break;
        case 4:
          printf ("Piece worker selected.\nEnter number of pieces: ");
          scanf ("%d", &pieces);
          printf ("Enter wage per piece: ");
          scanf ("%f", &pSalary);
          pay = pieces * pSalary;
          printf ("Piece Worker's pay is $%.2f\n", pay);
          ++pWorkers;
          break;
        default :
          printf ("Invalid pay code.\n");
          break;
        }
    }

  printf ("\n\n");
  printf ("Total number of managers paid           : %d\n", managers);
  printf ("Total number of hourly workers paid     : %d\n", hWorkers);
  printf ("Total number of commission workers paid : %d\n", cWorkers);
  printf ("Total number of piece workers paid      : %d\n", pWorkers);
}