#include
using namespace std;
class A {
int a;
public:
A(int aa=0){a=aa;}
~A( ){cout<<″Destructor A!″<
};
class B: public A{
int b;
public:
B(int aa = 0,int bb = 0):A(aa){b = bb;}
~B( ){cout<<″Destructor B!″<< b<< endl;}
};
void main( ){
B x(5), y(6,7);
}
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