다음은 실행 결과다.
class Box(1,2,3) volume is 6
class Carton(1,2,3) volume is 5.1
class Carton(4,5,6) volume is 102
class Box(4,5,6) volume is 120
다음은 실행 결과다.
class Box(1,2,3) volume is 6
class Carton(1,2,3) volume is 5.1
class Carton(4,5,6) volume is 102
class Box(4,5,6) volume is 120