有如下程序:#include <iostream>using namespace std;class Base{public:Base(){cout<<"BB"; f()
有如下程序:#include <iostream>using namespace std;class Base{ public: Base(){cout<<"BB"; f(); } Void f(){cout<<"Bf"; }};class Derived: public Base{ public: Derived() { cout<<"DD"; } void f() { cout<<"Df"; }};int main() { Derived d; return 0; }执行上面的程序将输出()。
A.BBBfDD
B.BBDfDDDf
C.DD
D.DDBBBf