open class Person {
    constructor(address: String) {
        println("Person Address: $address")
    }

    constructor(address: String, birthday: String) {
        println("Person Address: $address, Birthday: $birthday")
    }
}

class MemberPerson : Person {
    constructor(address: String) : super(address) {
        println("MemberPerson Address: $address")
    }

    constructor(address: String, birthday: String) : super(address, birthday) {
        println("MemberPerson Address: $address, Birthday: $birthday")
    }
}

fun main() {
    //val person1 = Person("123 Main St")
    //val person2 = Person("123 Main St", "01/01/1990")

    val member1 = MemberPerson("456 Elm St")
    val member2 = MemberPerson("456 Elm St", "02/02/1992")
}

// 결과
Person Address: 123 Main St
Person Address: 123 Main St, Birthday: 01/01/1990

Person Address: 456 Elm St
MemberPerson Address: 456 Elm St

Person Address: 456 Elm St, Birthday: 02/02/1992
MemberPerson Address: 456 Elm St, Birthday: 02/02/1992

• super 로 부모 클래스 Person 생성자 상속.