Bus Ride, code snippet 28

busride_code_snippet_28.go

// SeniorAge is the minimum age from which a Passenger is considered a senior to the BusCompany.
const SeniorAge = 65

// IsSenior returns true if the Passenger is a senior, and false otherwise.
// IsSenior detects age by extracting the last two digits from the SSN and treating them like an age.
func (p Passenger) IsSenior() bool {
	age,err:=strconv.ParseInt(p.SSN[len(p.SSN)-2:],10,8)
	if err != nil {
		panic("invalid SSN: " + p.SSN)
	}
	return age >= SeniorAge
}