rem: char *get_entry_type(enum ExpenseType type)
add: get_entry_type(enum ExpenseType type)
context: char *get_entry_type(enum ExpenseType type) {   switch(type) {     	case etAirfare:       		return "Airfare";     	case etBreakfast:       		return "Breakfast";     	case etBus:       		return "Bus";     	case etBusinessMeals:       		return "BusinessMeals";     	case etCarRental:       		return "CarRental";     	case etDinner:       		return "Dinner";     	case etEntertainment:       		return "Entertainment";     	case etFax:       		return "Fax";     	case etGas:       		return "Gas";    case etGifts:	      return "Gifts";    case etHotel:      return "Hotel";    case etIncidentals:      return "Incidentals";    case etLaundry:      return "Laundry";    case etLimo:      return "Limo";    case etLodging:      return "Lodging";    case etLunch:      return "Lunch";    case etMileage:      return "Mileage";    case etOther:      return "Other";    case etParking:      return "Parking";    case etPostage:      return "Postage";    case etSnack:      return "Snack";    case etSubway:      return "Subway";    case etSupplies:      return "Supplies";    case etTaxi:      return "Taxi";    case etTelephone:      return "Telephone";    case etTips:      return "Tips";    case etTolls:      return "Tolls";    case etTrain:      return "Train";    default:      return NULL;   }}