填空题

请将如下程序补充完整,使得输出结果为:bbaa #include <iostream> using namespace std; class A { public: 【14】 {cout << "aa"; } }; class B: public A{ public: ~B(){ cout << "bb"; } }; int main () { B *p= new B; delete p; return 0; }

【参考答案】

~A()