4. Sub-object constructors

class Cylinder {};
class Transmission {};
class Wheel {};

class Engine {
	Cylinder     m_cylinder[ 2 ];
};

class Moped {
	Engine       m_engine;
	Transmission m_transmission;
	Wheel        m_wheel[ 2 ];
};

int main()
{
    Moped honda;
    return 0;
}