有如下程序:#include<iostream)using namespace std;classBase{public:Base(int x=0){cout<<x;}}
有如下程序: #include<iostream) using namespace std; classBase{ public: Base(int x=0){cout<<x;} }; Class Derived:public Base{ public: Derived(int x=0){cout<<x;} private: Base Val; }; int main(){ Derived d(1); return
A.100
B.000
C.010
D.001