有以下程序:include using namespace std;class Base{public: Base(){} virtual void 有以下程序： #include ＜iostream＞ using namespace std; class Base { public: Base(){} virtual void f1() { cout＜＜"f1 of base"＜＜end1; } ～Base(){} }; class Derive: public Base { public: void fl(int x) { cout＜＜"f1 of derive"＜＜end1; } }; int main ( ) { Base *p; Derive obj1; p=obj 1; p-＞f1 ( ); return 0; }A．编译时出错B．f1 of deriveC．f1 of baseD．以上答案都不对
有以下程序:include using namespace std;class Base{public: Base(){} virtual void
有以下程序： #include ＜iostream＞ using namespace std; class Base { public: Base(){} virtual void f1() { cout＜＜"f1 of base"＜＜end1; } ～Base(){} }; class Derive: public Base { public: void fl(int x) { cout＜＜"f1 of derive"＜＜end1; } }; int main ( ) { Base *p; Derive obj1; p=&obj 1; p-＞f1 ( ); return 0; }
A．编译时出错
B．f1 of derive
C．f1 of base
D．以上答案都不对
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