有如下程序: include using namespaee std; class A{ public: A( ){cout 有如下程序:include<iostream>using namespaee std;class A{public:A( ){cout<<"A";}~A( ){cout<<"A";}};class B{A a;public:B( ){cout<<"B";}~B( )t cout<<"B";}};int main( ){B b;return 0;}程序的输出结果是______。

有如下程序: include using namespaee std; class A{ public: A( ){cout<<"A";}

有如下程序:

include<iostream>

using namespaee std;

class A{

public:

A( ){cout<<"A";}

~A( ){cout<<"A";}

};

class B{

A a;

public:

B( ){cout<<"B";}

~B( )t cout<<"B";}

};

int main( ){

B b;

return 0;

}

程序的输出结果是______。


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