TAILIEUCHUNG - Absolute C++ (4th Edition) part 62

Absolute C++ (4th Edition) part 62. KEY BENEFIT: C++ programming concepts and techniques are presented in a straightforward style using understandable language and code. KEY TOPICS: C++ Basics; Flow of Control; Function Basics; Parameters and Overloading; Arrays; Structures and Classes; Constructors; Operator Overloading, Friends, and References; Strings; Pointers and Dynamic Arrays; Separate Compilation and Namespaces; Streams and File I/O; Recursion; Inheritance; Polymorphism and Virtual Functions; Templates; Linked Data Structures; Exception Handling; Standard Template Library; Patterns and UML. MARKET: Useful for both beginning and intermediate C++ programmers. . | Programming with Inheritance 617 Pitfall Same Object on Both Sides of the Assignment Operator Whenever you overload an assignment operator always make sure your definition works when the same object occurs on both sides of the assignment operator. In most cases you will need to make this a special case with some code of its own. An example of this is given in the programming example Partially Filled Array with Backup. Self-Test Exercises 8. Suppose Child is a class derived from the class Parent and that the class Grandchild is a class derived from the class Child. This question is concerned with the constructors and destructors for the three classes Parent Child and Grandchild. When a constructor for the class Grandchild is invoked what constructors are invoked and in what order When the destructor for the class Grandchild is invoked what destructors are invoked and in what order 9. Is the following alternative definition of the default constructor for the class PFArrayDBak Displays and legal The invocation of the constructor from the base class has been omitted. Explain your answer. PFArrayDBak PFArrayDBak usedB 0 b new double capacity Example Alternate Implementation of PFArrayDBak At first glance it may seem that we needed to make the member variables of the base class PFAr-rayD protected in order to give the definitions of the member functions for the derived class PFArrayDBak. After all many of the member functions manipulate the inherited member variables a used and capacity. The implementation we gave in Display does indeed refer to a used and capacity by name and so those particular definitions do depend on these member variables being protected in the base class as opposed to private . However we have enough accessor and mutator functions in the base class that with just a bit more thinking we can rewrite the implementation of the derived class PFArrayDBak so that it works even if all the member variables in the base class PFArrayD are .

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