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有如下程序:includeusing namespace std;class XX{protected:int k;public:XX(int n=

有如下程序: #include<iostream> using namespace std; class XX { protected: int k; public: XX(int n=5):k(n){}; ~XX() { cout<<"XX": } virtual void f()const=0; }; inline void XX::f()const { cout<<k+3; }; class YY:public XX { public: ~YY() { cout<<”YY”; } void f()const { cout<<k-3; XX::f(); } }; int main() { XX &p=*new YY; P.f(); delete &p; return 0: } 执行上面的程序将输出( )。

A.28XX

B.28YYXX

C.33XX

D.33XXYY


参考答案

更多 “ 有如下程序:includeusing namespace std;class XX{protected:int k;public:XX(int n= 有如下程序: #include<iostream> using namespace std; class XX { protected: int k; public: XX(int n=5):k(n){}; ~XX() { cout<<"XX": } virtual void f()const=0; }; inline void XX::f()const { cout<<k+3; }; class YY:public XX { public: ~YY() { cout<<”YY”; } void f()const { cout<<k-3; XX::f(); } }; int main() { XX p=*new YY; P.f(); delete p; return 0: } 执行上面的程序将输出( )。A.28XXB.28YYXXC.33XXD.33XXYY ” 相关考题
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