问答题

#include ＜ iostream.h ＞
class AA
{ public:
AA(______)
{ A = i; B = j; cout ＜＜ "Constructor\n"; }
AA ( AA &obj)
{ A = obj.A;
B =obj.B;
cout ＜＜ " Copy Constructor\n";
}
～ AA() { cout ＜＜ " Destructor\n" ; }
void show()
{ cout ＜＜ "A = " ＜＜ A ＜＜ ", B = " ＜＜ B ＜＜ endl; }
private:
int A, B;
};
void main()
{AA a1 (2,3);
AA a2(a1);
a2.show();
______=&a2;
pa-＞show();
}