#include <iostream>
 
using namespace std;
 
class LeakyBase{
public:
	~LeakyBase(){}
};
 
class PluggedBase{
public:
	virtual ~PluggedBase(){}
};
 
class LeakyDerived : public LeakyBase{
public:
	LeakyDerived() { cout << "LeakyDerived()" << endl; }
	~LeakyDerived() { cout << "~LeakyDerived()" << endl; }
};
 
class PluggedDerived : public PluggedBase{
public:
	PluggedDerived() { cout << "PublicDerived()" << endl; }
	~PluggedDerived() { cout << "~PluggedDerived()" << endl; }
};
 
int main()
{
	LeakyBase * l = new LeakyDerived;
	PluggedBase * p = new PluggedDerived;
 
	delete l;
	delete p;
}
 

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