case 2:
  printf("twenty");
  break;

case 3:
  printf("thirty");
  break;

case 4:
  printf("forty");
  break;

case 5:
  printf("fifty");
  break;

case 6:
  printf("sixty");
  break;

case 7:
  printf("seventy");
  break;

case 8:
  printf("eighty");
  break;

case 9:
  printf("ninety");
  break;

case 0;
  break;