Polymorphism

Replacement and Refinement

2 reasons for overriding

Abstract Class

a class with at least 1 pure virtual function is called an _________ ___________.

Late Binding (Dynamic Binding) (Runtime Binding)

a function call is resolved at runtime. now compiler determines the type of object at runtime, and then binds the function call.

Polymorphic Function

a function can accept parameters of different types plus different number of parameters

Virtual Member

a member function of a class that can be redefined in its derived classes is known as a _______ _________

Polymorphic Pointer

a pointer that can point to values of different type

Abstract function

a pure virtual function is sometimes called an _________ _________

Polymorphic Variable

a variable can contain values of different types

subclassed

abstract class can only be __________.

base class

an abstract class is a ________ ________ from which other classes can inherit

Virtual Functions

are used in c++ to support polymorphic behavior

Overloaded Function

by providing an ____________ __________ in derived class we can achieve overriding

binding

connecting the function call to function body

polymorphism

having multiple forms of one thing. in inheritance it is done by function overloading. when both base and derived class have member functions with same declaration but different definitions

Refinement

providing a function that calls the base class function but supplements it with additional actions

Replacement

providing a totally new function to fill the necessary operation

instantiate

the c++ compiler will not allow you to __________ an abstract class

concrete classes

the classes that can be used to instantiate objects are called __________ __________,

Pure Virtual functions

to put the expression = 0 in a class declaration.

early binding (static binding) (compile time)

when binding is done before being called