Mega Code Archive
Virtual Functions Are Hierarchical
<![CDATA[
#include <iostream>
using namespace std;
class base {
public:
virtual void vfunc() {
cout << "This is base's vfunc().\n";
}
};
class derived1 : public base {
public:
void vfunc() {
cout << "This is derived1's vfunc().\n";
}
};
class derived2 : public base {
public:
// vfunc() not overridden by derived2, base's is used
};
int main()
{
base *p, b;
derived1 d1;
derived2 d2;
// point to base
p = &b;
p->vfunc(); // access base's vfunc()
// point to derived1
p = &d1;
p->vfunc(); // access derived1's vfunc()
// point to derived2
p = &d2;
p->vfunc(); // use base's vfunc()
return 0;
}
]]>