exam 3 quizlet for the nerd who need help like me
The ______ destructor is called before the _______ destructor
derived, base
If an exception is thrown by a member function of a class object, then the class _______ is called.
destructor
The compiler preforms ______ on virtual functions.
dynamic binding
These are used to signal errors or unexpected events that occur while a program is running.
exceptions
When member functions behave differently, depending upon which object performed the call, this is an example of ________
polymorphism
An actual instance of a function is created in memory when the compiler encounters
a call to the template function
The line: virtual double earnings() const = 0; appears in a class definition. You CAN NOT deduce that;
all classes derived from this class will override this method.
Using inheritance allows us to
all of the above: 1. eliminate duplicate code 2. make our classes more modular 3. us polymorphism
Abstract classes
are defined, but the programmer never intends to instance any objects from them.
If a base class has public member functions that are not listed by a derived class, then these functions
are inherited unchanged in the derived class
Which of the following assignments would be a compilation error?
assigning the address of a base class object to a derived class pointer
The ______ constructer is called before the _________ constructer.
base, derived
Which of the following would not be a member function that derived classes Fish, Frog, and Bird should inherit from the base class Animal and then provide their own definitions for so that the function call can be preform polymorphism.
flapWings();
________ allows us to create new classes based on existing classes
inheritance
__________ is commonly used to extend a class, or to give it additional capabilities.
inheritance
When you derive a class from an existing class, you _____ add new data and functions.
may
Polymorphism is when ________ in a class hierarchy perform differently, depending upon which object performs the call.
member functions
Once an exception is thrown, when can control return to the throw point.
never
How much memory is reserved for a function template
none/no memory
Which of the following is not allowed?
objects of abstract classes
_________ to a base class may be assigned the address of a derived class object.
pointers
The term _______ means the ability to take many forms
polymorphism
_______ members of a base class are accessible to a derived class.
public and protected
The main difference between a virtual function and a pure virtual function is
that a pure virtual function cannot have an implementation.
Which of the following should be virtual if a base class uses dynamic memory allocations?
the destructor
The block of code that checks if an unusual situation or error is called
the try block
The correct order in which an exception is detected and handled is:
try, throw, catch
__________ functions are dynamically bound by the compiler
virtual
A ________ of a base class expects to be overridden in a derived class
virtual function
Polymorphism is implemented via:
virtual functions and dynamic binding
An exception thrown from outside a try block
will cause the program to abort execution
Employee is a base class and HourlyWorker is a derived class, with a redefines non-virtual print function. Given the following statements, will the output of the two print function calls be identical? ePtr =&h; ePtr->print(); ePtr->Employee::print();
yes
