有如下程序: #include<iostream> using namespace std; class Base{ public: virtual void funct
有如下程序:
#include<iostream>
using namespace std;
class Base{
public:
virtual void function1(){cout<<'0';}
void function2(){cout<<'1';}
};
class Derived:public Base{
public:
void function1(){cout<<'2';}
void function2(){cout<<'3';}
};
int main(){
Base*P=new Derived();
p->function1();
p->function2();
return 0;
};
运行时的输出结果是()。
A) O1
B) 21
C) 03
D) 23