题目内容:
有如下程序: #include<iostream> using namespace std; class Base{ protected: Base(){cout<<'Base';} Base(char c){cout<<c;} }; class Derived:public Base{ public: Derived(char c){cout<<c;} }; int main(){ Derived d('Derived'); return 0; } 执行这个程序屏幕上将显示输出( )。A.Derived
B.DerivedBase
C.BaseDerived
D.DerivedDerived
参考答案: