#include
using namespace std;
class Base
{
public:
virtual void printBase(){}
private:
int bval;
};
class Derived:public Base{
public:
virtual void printDerived() {}
private:
int dval;
};
void main(){
Derived derived1,derived2;
Base *ptb=&derived1;
ptb->printDerived();//没有成员函数printDerived1
ptb->printBase();
Base &rfb=derived2;
rfb.printDerived();//这个也是,
rfb.printBase();
}
基类指针怎么访问派生类的成员函数呢(新增的)?而且这样访问为什么是错的。
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