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#include<iostream>
using namespace std;
class A{
public:
A(){
cout<<"A"<<endl;
}
~A(){
cout<<"~ A"<<endl;
//printf("~A \n");
}
};
class B{
public:
B(){
a=new A();

cout<<"B"<<endl;
}
~B(){
delete a;

cout<< "~B"<<endl;

}
private:
A *a;
};
B b; //´Ë´¦¶¨ÒåÈ«¾Ö±äÁ¿
void main(){
A a;
}
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