c++ 기본적인 질문 있습니다.

struct stEmployee
{
	BYTE btAge;
	std::string Name;
 
	BYTE GetAge() { return btAge; }
};
 
struct stSamSung
{
	int nID;
	stEmployee sCEO;
};
 
struct stNC : public stEmployee
{
	int nID;
};
 
void nFuntion()
{
	stSamSung sSamSung;
	sSamSung.sCEO.btAge = 5;
 
	printf("sSamSung.sCEO.btAge : %d\n", sSamSung.sCEO.GetAge());
 
	stNC sNC;
	sNC.btAge = 1;
 
	printf("stNC.btAge : %d\n", sNC.GetAge());
 
	system("PAUSE");
}