Question 1

What are the benefits of inheritance and Object Oriented Programming?

Accepted Answer

The benefits are abstraction and code reuse: A general form of a class can be defined.It contains common features of the several specialized versions that may be defined and caused to inherit from the general form.This saves you the trouble of writing identical code two or more times.
Though the text does not say this explicitly,inheritance and OOP better enable modeling of problems within programs.The objects represent actors and the member functions represent behavior of the actors.The data members are information the actors must remember to carry out their prescribed behavior.

Question 2

A base/member initialization list is preceded by

Accepted Answer

A) two colons 
B) a dot (or period) 
C) a single colon 
D) a semicolon 
A) two colons 
B) a dot (or period) 
C) a single colon 
D) a semicolon C

Question 3

If B is a public base class of D,then D's members cannot invoke public members functions of B.

Accepted Answer

A) True 
 B)False  False

Question 4

A programmer can use inheritance with an existing library for which only the header file and binary are available,to derive a class more suitable to her purpose.

Accepted Answer

A) True 
 B)False

Question 5

In C++,inheritance has much to do with the gene pool.Explain.

Accepted Answer

A) True 
 B)False

Question 6

If class D is derived from class B then class D has only some of the members from B,and the additional members defined in D.

Accepted Answer

A) True 
 B)False

Question 7

We can assign a base class object to a derived class variable.

Accepted Answer

A) True 
 B)False

Question 8

Given the class below,tell to what value the default constructor initializes the data member.Name this initialization technique and give another way to write the constructor.
class A
{
public:
A();
private:
int a;
};
A::A(): a(17)
{
//deliberately empty
}

Accepted Answer

This is a base (or member)init

Question 9

Constructors are inherited.After all something has to initialize the inherited variables.

Accepted Answer

A) True 
 B)False

Question 10

When a derived class inherits from a base class,how is the base class constructor called?

Accepted Answer

The base class constructor is

Question 11

Suppose class Child is derived from class Parent that was in turn derived from class GrandParent.When we destroy an object of class Child,three destructors are called: i)Child,ii)Parent,iii )GrandParent..What is the order?

Accepted Answer

A) Child,Parent,GrandParent 
B) Parent,GrandParent,Child 
C) GrandParent,Child,Parent 
D) GrandParent,Parent,Child 
A) Child,Parent,GrandParent 
B) Parent,GrandParent,Child 
C) GrandParent,Child,Parent 
D) GrandParent,Parent,Child

Question 12

If a base class constructor is not called explicitly in the definition of a derived class constructor,an error results.

Accepted Answer

A) True 
 B)False

Question 13

If a class B is a pubic base class for a derived class D,then an object of class D bears what relationship to class B?

Accepted Answer

A) A has-a relationship. 
B) A fraternal relationship 
C) An is-a relationship. 
D) There is no relationship here. 
A) A has-a relationship. 
B) A fraternal relationship 
C) An is-a relationship. 
D) There is no relationship here.

Question 14

Suppose class Child is derived from class Parent that was in turn derived from class GrandParent.When we declare an object of class Child,three constructors are called: i)Child,ii)Parent,iii )GrandParent..What is the order?

Accepted Answer

A) Child,Parent,GrandParent 
B) Parent,GrandParent,Child 
C) GrandParent,Child,Parent 
D) GrandParent,Parent,Child 
A) Child,Parent,GrandParent 
B) Parent,GrandParent,Child 
C) GrandParent,Child,Parent 
D) GrandParent,Parent,Child

Question 15

If B is a base class of D,then D's members cannot access the private data members of B without regard to the kind of inheritance.

Accepted Answer

A) True 
 B)False

Question 16

If B is a base class of D,then D's members cannot invoke private member functions of B without regard to the kind of inheritance.

Accepted Answer

A) True 
 B)False

Question 17

In the code for HourlyEmployee that is derived from Employee,the constructor code appears
HourlyEmployee::
HourlyEmployee(string theName,
string theNumber,
double theWageRate,
double theHours
)
: Employee(theName,theNumber),
wageRate(theWageRate),
hours(theHours)
{
// deliberately empty
}
Describe the purpose of the items after the colon (:)in this code.

Accepted Answer

The call,Employee(theName,theNumber),inv

Question 18

When class D is derived from class B,the derived class is usually smaller.Explain.

Accepted Answer

A) True 
 B)False

Question 19

Neither the assignment operator overloading nor the copy constructor is inherited.If you do not create one,does this mean that the derived class will have no assignment operator or copy constructor?

Accepted Answer

In classes for which no operator assignm

Question 20

An inheritance chain of any desired length is possible.

Accepted Answer

A) True 
 B)False

What are the benefits of inheritance and Object Oriented Programming?

A base/member initialization list is preceded by

If B is a public base class of D,then D's members cannot invoke public members functions of B.

A programmer can use inheritance with an existing library for which only the header file and binary are available,to derive a class more suitable to her purpose.

In C++,inheritance has much to do with the gene pool.Explain.

If class D is derived from class B then class D has only some of the members from B,and the additional members defined in D.

We can assign a base class object to a derived class variable.

Given the class below,tell to what value the default constructor initializes the data member.Name this initialization technique and give another way to write the constructor. class A { public: A(); private: int a; }; A::A(): a(17) { //deliberately empty }

Constructors are inherited.After all something has to initialize the inherited variables.

When a derived class inherits from a base class,how is the base class constructor called?

Suppose class Child is derived from class Parent that was in turn derived from class GrandParent.When we destroy an object of class Child,three destructors are called: i)Child,ii)Parent,iii )GrandParent..What is the order?

If a base class constructor is not called explicitly in the definition of a derived class constructor,an error results.

If a class B is a pubic base class for a derived class D,then an object of class D bears what relationship to class B?

Suppose class Child is derived from class Parent that was in turn derived from class GrandParent.When we declare an object of class Child,three constructors are called: i)Child,ii)Parent,iii )GrandParent..What is the order?

If B is a base class of D,then D's members cannot access the private data members of B without regard to the kind of inheritance.

If B is a base class of D,then D's members cannot invoke private member functions of B without regard to the kind of inheritance.

When class D is derived from class B,the derived class is usually smaller.Explain.

Neither the assignment operator overloading nor the copy constructor is inherited.If you do not create one,does this mean that the derived class will have no assignment operator or copy constructor?

An inheritance chain of any desired length is possible.

C++ Basics

Flow of Control

Function Basics

Parameters and Overloading

Arrays

Structures and Classes

Constructors and Other Tools

Operator Overloading,friends,and References

Strings

Pointers and Dynamic Arrays

Separate Compilation and Namespaces

Streams and File IO

Recursion

Polymorphism and Virtual Functions

Templates

Linked Data Structures

Exception Handling

Standard Template Library

Patterns and Uml

Filters

Exam 14: Inheritance

What are the benefits of inheritance and Object Oriented Programming?

A base/member initialization list is preceded by

If B is a public base class of D,then D's members cannot invoke public members functions of B.

A programmer can use inheritance with an existing library for which only the header file and binary are available,to derive a class more suitable to her purpose.

In C++,inheritance has much to do with the gene pool.Explain.

If class D is derived from class B then class D has only some of the members from B,and the additional members defined in D.

We can assign a base class object to a derived class variable.

Given the class below,tell to what value the default constructor initializes the data member.Name this initialization technique and give another way to write the constructor. class A { public: A(); private: int a; }; A::A(): a(17) { //deliberately empty }

Constructors are inherited.After all something has to initialize the inherited variables.

When a derived class inherits from a base class,how is the base class constructor called?

Suppose class Child is derived from class Parent that was in turn derived from class GrandParent.When we destroy an object of class Child,three destructors are called: i)Child,ii)Parent,iii )GrandParent..What is the order?

If a base class constructor is not called explicitly in the definition of a derived class constructor,an error results.

If a class B is a pubic base class for a derived class D,then an object of class D bears what relationship to class B?

Suppose class Child is derived from class Parent that was in turn derived from class GrandParent.When we declare an object of class Child,three constructors are called: i)Child,ii)Parent,iii )GrandParent..What is the order?

If B is a base class of D,then D's members cannot access the private data members of B without regard to the kind of inheritance.

If B is a base class of D,then D's members cannot invoke private member functions of B without regard to the kind of inheritance.

When class D is derived from class B,the derived class is usually smaller.Explain.

Neither the assignment operator overloading nor the copy constructor is inherited.If you do not create one,does this mean that the derived class will have no assignment operator or copy constructor?

An inheritance chain of any desired length is possible.

C++ Basics

Flow of Control

Function Basics

Parameters and Overloading

Arrays

Structures and Classes

Constructors and Other Tools

Operator Overloading,friends,and References

Strings

Pointers and Dynamic Arrays

Separate Compilation and Namespaces

Streams and File IO

Recursion

Polymorphism and Virtual Functions

Templates

Linked Data Structures

Exception Handling

Standard Template Library

Patterns and Uml

Filters