destructor.cpp
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#include <iostream>
using namespace std;
class base {
public:
base()
{
cout << "base()" << endl;
}
virtual void f()
{
cout << "base" << endl;
};
void g()
{
this->f();
};
virtual ~base()
{
this->f();
cout << "~base()" << endl;
};
};
class derived : public base {
int* ptr;
public:
derived()
{
ptr = new int(7);
cout << "derived()" << endl;
};
~derived()
{
delete ptr;
cout << "~derived()" << endl;
};
void f() override
{
cout << "derived " << *ptr << endl;
};
};
int main()
{
base* ptr = new derived;
ptr->g();
ptr->f();
delete ptr;
}