虛函數與虛繼承---sizeof()

 class A

{

char k[3];

public:

virtual void aa() {}

};

class B : public virtual A

{

char j[3];

public:

virtual void bb() {}

};

 

class C : public virtual B

{

char i[3];

public:

virtual void cc() {}

};

 

class D : public B, public C

{

char l[3];

virtual void dd() {}

};

 

int main (int argc, char *argv[]) {

cout << "A: " << sizeof(A) << endl

<< "B: " << sizeof(B) << endl

<< "C: " << sizeof(C) << endl

<< "D: " << sizeof(D) << endl;

return 0;

}

 

輸出8，16,24,36 很奇怪的是最後一個輸出，至今沒想出爲啥會是36。忘誰能幫我解答，不勝感激。