signed char i,j;
unsigned char k;

main()
{
  i = 0xA0;  j = 0x45;

  for (k = 0; k != 0xFF; k++) {
  /* a */
  if (i <= j) j++;
   else i++;

  /* b */
  if (i < j) j++;
   else i++;


  /* c */
  if (i >= j) j++;
   else i++;

}

  printf ("i: %x, j:  %x\n",i,j);

}

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