VC6でコンパイル
class A
{
public:
int x;
public:
virtual void funA() { }
};
class B : virtual public A
{
public:
int y;
public:
virtual void funA() { }
virtual void funB() { }
};
sizeof(B)=20 // because of B::vptr+vbptr+B::y+A::vptr+A::x = 5*4
class A
{
public:
int x;
public:
virtual void funA() { }
};
class B : virtual public A
{
public:
int y;
public:
B() {}
virtual void funB() { }
};
sizeof(B)=20 // because of B::vptr+vbptr+B::y+A::vptr+A::x = 5*4
class A
{
public:
int x;
public:
virtual void funA() { }
};
class B : virtual public A
{
public:
int y;
public:
B() {}
virtual void funA() { }
virtual void funB() { }
};
sizeof(B)=24
なぜ24になるのか理解できない??? 私は彼らが同じだと思います!