Introduction to OOP

Chapter 5: Messages Instances and Initialization:

Memory Errors

Garbage collection systems impose a run-time overhead, but prevent a number of potential memory errors:

Using a memory value after it has been recovered


	PlayingCard * aCard = new PlayingCard(Spade, 1);
	delete aCard;
	cout << aCard.rank();

Free the same value twice

	PlayingCard * aCard = new PlayingCard(Spade, 1);
	delete aCard;
	delete aCard; // delete already deleted value