프로그래밍(programming)/C++
virtual 키워드
윤's군
2013. 10. 16. 10:48
말그대로 가상임
Example 1
class AAA{
public:
virtual void fct(){
cout << "AAA" << endl;
}
};
class BBB:public AAA{
public:
void fct(){ // virtual
cout << "BBB" << endl;
}
};
int _tmain(int argc, _TCHAR* argv[])
{
BBB *b = new BBB;
AAA *a = b;
a->fct();
b->fct();
return 0;
}
출력결과는
BBB
BBB
Example 2
class AAA{
public:
virtual void fct(){
cout << "AAA" << endl;
}
};
class BBB:public AAA{
public:
void fct(){ // virtual
cout << "BBB" << endl;
}
};
class CCC:public BBB{
public:
void fct(){
cout << "CCC" << endl;
}
};
int _tmain(int argc, _TCHAR* argv[])
{
CCC *c = new CCC;
BBB *b = c;
AAA *a = b;
a->fct();
b->fct();
c->fct();
return 0;
}
출력결과는
CCC
CCC
CCC