有如下程序include using namespace std;class A{public:virtual void func1 (){ cou 有如下程序#include <iostream>using namespace std;class A{public:virtual void func1 (){ cout<<"A1"; }void func2(){ cout<<"A2"; }};class B: public A{public:void func l(){ cout<<"B1"; }void func2(){ cout<<"B2"; }};int main() {A *p=new B;p->func1();p->func2();return 0;}运行此程序,屏幕上将显示输出( )。A.B1B2B.A1A2C.B1A2D.A1B2

有如下程序include using namespace std;class A{public:virtual void func1 (){ cou

有如下程序#include <iostream>using namespace std;class A{public:virtual void func1 (){ cout<<"A1"; }void func2(){ cout<<"A2"; }};class B: public A{public:void func l(){ cout<<"B1"; }void func2(){ cout<<"B2"; }};int main() {A *p=new B;p->func1();p->func2();return 0;}运行此程序,屏幕上将显示输出( )。

A.B1B2

B.A1A2

C.B1A2

D.A1B2


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