Comments on: 12.3 — Virtual destructors, virtual assignment, and overriding virtualization http://www.learncpp.com/cpp-tutorial/123-virtual-destructors-virtual-assignment-and-overriding-virtualization/ Wed, 20 Aug 2008 08:26:35 +0000 http://wordpress.org/?v=2.5.1 By: Ben http://www.learncpp.com/cpp-tutorial/123-virtual-destructors-virtual-assignment-and-overriding-virtualization/#comment-23059 Ben Thu, 07 Aug 2008 15:11:31 +0000 http://www.learncpp.com/cpp-tutorial/123-virtual-destructors-virtual-assignment-and-overriding-virtualization/#comment-23059 What a stupid mistake, i would never do this. Every child knows, that you have to delete () m_pnArray... Damn it, i really did it with this sort of brackets and it was quite confusing, because i didn't see the mistake at first glance. What a stupid mistake, i would never do this. Every child knows, that you have to delete () m_pnArray…
Damn it, i really did it with this sort of brackets and it was quite confusing, because i didn’t see the mistake at first glance.

]]> By: Alex http://www.learncpp.com/cpp-tutorial/123-virtual-destructors-virtual-assignment-and-overriding-virtualization/#comment-21660 Alex Thu, 24 Jul 2008 01:19:35 +0000 http://www.learncpp.com/cpp-tutorial/123-virtual-destructors-virtual-assignment-and-overriding-virtualization/#comment-21660 You are correct. This is one of the things I constantly screw up in C++. You are correct. This is one of the things I constantly screw up in C++.

]]> By: sandhya http://www.learncpp.com/cpp-tutorial/123-virtual-destructors-virtual-assignment-and-overriding-virtualization/#comment-20718 sandhya Fri, 11 Jul 2008 08:40:08 +0000 http://www.learncpp.com/cpp-tutorial/123-virtual-destructors-virtual-assignment-and-overriding-virtualization/#comment-20718 Hi Alex, In the example for virtual destructor class Derived: public Base { private: int* m_pnArray; public: Derived(int nLength) { m_pnArray = new int[nLength]; } virtual ~Derived() { cout << "Calling ~Derived()" << endl; delete m_pnArray; } }; In the constructor, you have dynamically allocated an integer array using new operator. But in destructor, you have used only "delete m_pnArray;" where u should have used "delete[] m_pnArray;". Correct me if i am wrong. Hi Alex,

In the example for virtual destructor
class Derived: public Base
{
private:
int* m_pnArray;

public:
Derived(int nLength)
{
m_pnArray = new int[nLength];
}

virtual ~Derived()
{
cout << “Calling ~Derived()” << endl;
delete m_pnArray;
}
};

In the constructor, you have dynamically allocated an integer array using new operator. But in destructor, you have used only “delete m_pnArray;” where u should have used “delete[] m_pnArray;”. Correct me if i am wrong.

]]> By: Learn C++ - » 12.2 — Virtual functions http://www.learncpp.com/cpp-tutorial/123-virtual-destructors-virtual-assignment-and-overriding-virtualization/#comment-14427 Learn C++ - » 12.2 — Virtual functions Mon, 05 May 2008 02:24:38 +0000 http://www.learncpp.com/cpp-tutorial/123-virtual-destructors-virtual-assignment-and-overriding-virtualization/#comment-14427 [...] Posts « 12.1 — Pointers and references to the base class of derived objects | Home | 12.3 — Virtual destructors, virtual assignment, and overriding virtualization » Wednesday, January 30th, 2008 at 3:46 [...] [...] Posts « 12.1 — Pointers and references to the base class of derived objects | Home | 12.3 — Virtual destructors, virtual assignment, and overriding virtualization » Wednesday, January 30th, 2008 at 3:46 [...]

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