3.62

/*
 * 3.62.c
 */

/* Enumerated type creates set of contants numbered 0 and upward */
typedef enum { MODE_A, MODE_B, MODE_C, MODE_D, MODE_E } mode_t;

long switch3(long *p1, long *p2, mode_t action) {
  long result = 0;
  switch(action) {
    case MODE_A:
      result = *p2;
      *p2 = *p1;
      break;
    case MODE_B:
      *p1 = *p1 + *p2;
      result = *p1;
      break;
    case MODE_C:
      *p1 = 59;
      result = *p2;
      break;
    case MODE_D:
      *p1 = *p2;
      result = 27;
      break;
    case MODE_E:
      result = 27;
      break;
    default:
      result = 12;
      break;
  }
  return result;
}