#include <iostream>
using namespace std;
class base
{
public:
virtual void disp()
{
cout << "hello,base" << endl;
}
};
class child :public base {
public:
void disp() {
cout << "hello,child" << endl;
}
};
int main() {
base obj_base;
child obj_child;
obj_base.disp();
obj_child.disp();
obj_base = obj_child;
obj_base.disp();
obj_base.base::disp();
obj_child.base::disp();
obj_child.child::disp();
system("pause");
return 0;
}
//11-3 通过指针访问虚函数
#include <iostream>
using namespace std;
class base
{
public:
virtual void disp()
{
cout << "hello,base" << endl;
}
void print()
{
cout << "base::print()" << std::endl;
}
};
class child :public base {
public:
void disp() {
cout << "child disp()" << endl;
}
void print() {
cout << "child print()" << endl;
}
};
int main() {
base obj_base;
base * pBase = &obj_base;
pBase->disp();
//child
child obj_child;
child * _pChild = &obj_child;
_pChild->disp();
cout << "derivide pointer to base pointer" << endl;
pBase=_pChild;
pBase->disp(); // 这里是可以访问到child中虚函数滴
//_pChild = (child *)&pBase;
//_pChild->disp();
_pChild->base::disp(); // 静态联编
system("pause");
return 0;
}
