更多"有如下程序:#include <iostream>using name"的相关试题:
[单项选择]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