class Base
{
	public:
	int m_public;
	private:
	int m_private;
	protected:
	int m_protected;
};

class Pub: public Base
// note: public inheritance
{
	// Public inheritance means:
	// Public inherited members stay public
	//(so m_public is treated as public)

	// Protected inherited members stay protected
	//(so m_protected is treated as protected)
	// Private inherited members stay inaccessible
	//(so m_private is inaccessible)
	public:
	Pub()
	{
		m_public = 1;
		// okay: m_public was inherited as public
		//m_private = 2;
		// not okay: m_private is inaccessible from derived class
		m_protected = 3;
		// okay: m_protected was inherited as protected
	}
};
int main()
{
	// Outside access uses the access specifiers of the
	//class being accessed.
	Base base;
	base.m_public = 1;
	// okay: m_public is public in Base
	//base.m_private = 2;
	// not okay: m_private is private in Base
	//base.m_protected = 3;
	// not okay: m_protected is protected in Base
	Pub pub;
	pub.m_public = 1;
	// okay: m_public is public in Pub
	//pub.m_private = 2;
	// not okay: m_private is inaccessible in Pub
	//pub.m_protected = 3;
	// not okay: m_protected is inaccessible in Pub
}