Question 1

The class io is the base class of the C++ stream classes istream and ostream.

Accepted Answer

A) True 
 B)False  False

Question 2

The preprocessor directive ____________________ is used to prevent multiple inclusions of a header file in a program.

Accepted Answer

#ifndef

Question 3

____ is the ability to use the same expression to denote different operations.

Accepted Answer

A)  Inheritance 
B)  Encapsulation 
C)  Polymorphism 
D)  Composition 
A)  Inheritance 
B)  Encapsulation 
C)  Polymorphism 
D)  Composition C

Question 4

Which of the following is true about inheritance?

Accepted Answer

A)  All public member functions of the base class become the public member functions of the derived class. 
B)  All public member variables of the base class become the public member variables of the derived class. 
C)  All public members of the base class become the public members of the derived class. 
D)  The public member variables of the base class become the public or private member variables of the derived class. 
A)  All public member functions of the base class become the public member functions of the derived class. 
B)  All public member variables of the base class become the public member variables of the derived class. 
C)  All public members of the base class become the public members of the derived class. 
D)  The public member variables of the base class become the public or private member variables of the derived class.

Question 5

In protected inheritance, public and protected members of the base class become the protected members of the derived class.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following class definitions makes the public members of the class aClass become the public members of the class bClass?

Accepted Answer

A)  class aclass: public bClass
{
$ / / . . .$
}; 
B)  Class bClass: public aClass
{
$ / / . . . $
} ; 
C)  Class bClass: aClass
{
$ / / . . . $
}; 
D)  class aClass: bClass
{
$ / / . . . $
}; 
A)  class aclass: public bClass
{
$ / / . . .$
}; 
B)  Class bClass: public aClass
{
$ / / . . . $
} ; 
C)  Class bClass: aClass
{
$ / / . . . $
}; 
D)  class aClass: bClass
{
$ / / . . . $
};

Question 7

What is the output of the following program?

Accepted Answer

A) $ \begin{array}{ll}2 & 3 \ 2 & 3\end{array} $ 
B) $ \begin{array}{lll}2 & 3 \ 3 & 5 & 8\end{array} $ 
C) $ \begin{array}{lll}3 & 5 & 8 \ 3 & 5 & 8\end{array} $ 
D) $ \begin{array}{lll}5 & 8 & \ 3 & 5 & 8\end{array} $ 
A) $ \begin{array}{ll}2 & 3 \ 2 & 3\end{array} $ 
B) $ \begin{array}{lll}2 & 3 \ 3 & 5 & 8\end{array} $ 
C) $ \begin{array}{lll}3 & 5 & 8 \ 3 & 5 & 8\end{array} $ 
D) $ \begin{array}{lll}5 & 8 & \ 3 & 5 & 8\end{array} $

Question 8

If the derived class classD overrides a public member function functionName of the base class classB, then to specify a call to that public member function of the base class, you use the statement ____.

Accepted Answer

A)  classD::functionName(); 
B)  classB::functionName(); 
C)  classD.functionName(); 
D)  classB.functionName(); 
A)  classD::functionName(); 
B)  classB::functionName(); 
C)  classD.functionName(); 
D)  classB.functionName();

Question 9

Suppose that bClass is a class.Which of the following statements correctly derives the class dClass from bClass?

Accepted Answer

A)  class dClass: public bClass
{
// classMemberslist
}; 
B)  dlass dClass: private bClass
{
// classMembersList
}; 
C)  class dClass: protected bCla
{
// classMemberslist
}; 
D)  class bClass: public dClass
{
// classMembersList
}; 
A)  class dClass: public bClass
{
// classMemberslist
}; 
B)  dlass dClass: private bClass
{
// classMembersList
}; 
C)  class dClass: protected bCla
{
// classMemberslist
}; 
D)  class bClass: public dClass
{
// classMembersList
};

Question 10

The new classes that we create from existing classes are called ____ classes.

Accepted Answer

A)  sibling 
B)  base 
C)  derived 
D)  parent 
A)  sibling 
B)  base 
C)  derived 
D)  parent

Question 11

____ is a "has-a" relationship.

Accepted Answer

A)  Inheritance 
B)  Encapsulation 
C)  Composition 
D)  Polymorphism 
A)  Inheritance 
B)  Encapsulation 
C)  Composition 
D)  Polymorphism

Question 12

Which of the following statements about inheritance is true if memberAccessSpecifier is protected?

Accepted Answer

A)  The private members of the base class become protected members of the derived class. 
B)  The derived class can directly access any member of the base class. 
C)  The public members of the base class become protected members of the derived class. 
D)  The protected members of the base class become private members of the derived class. 
A)  The private members of the base class become protected members of the derived class. 
B)  The derived class can directly access any member of the base class. 
C)  The public members of the base class become protected members of the derived class. 
D)  The protected members of the base class become private members of the derived class.

Question 13

The ____ members of an object form its external state.

Accepted Answer

A)  private 
B)  public 
C)  protected 
D)  static 
A)  private 
B)  public 
C)  protected 
D)  static

Question 14

C++ provides ____ functions as a means to implement polymorphism in an inheritance hierarchy, which allows the run-time selection of appropriate member functions.

Accepted Answer

A)  redefined 
B)  overridden 
C)  virtual 
D)  overloaded 
A)  redefined 
B)  overridden 
C)  virtual 
D)  overloaded

Question 15

In OOD, a program is a collection of interacting ____________________; in structured programming, a program is a collection of interacting functions.

Accepted Answer

The answer of In OOD, a program is a collection...

Question 16

A derived class cannot directly access public members of a base class.

Accepted Answer

A) True 
 B)False

Question 17

Existing classes, from which you create new classes, are called ____ classes.

Accepted Answer

A)  child 
B)  base 
C)  sibling 
D)  derived 
A)  child 
B)  base 
C)  sibling 
D)  derived

Question 18

Classes can create new classes from existing classes.This important feature ____.

Accepted Answer

A)  encourages code reuse 
B)  aids the separation of data and operations 
C)  provides public access to the internal state of an object 
D)  results in more software complexity 
A)  encourages code reuse 
B)  aids the separation of data and operations 
C)  provides public access to the internal state of an object 
D)  results in more software complexity

Question 19

____ is the ability to combine data, and operations on that data, in a single unit.

Accepted Answer

A)  Inheritance 
B)  Encapsulation 
C)  Polymorphism 
D)  Composition 
A)  Inheritance 
B)  Encapsulation 
C)  Polymorphism 
D)  Composition

Question 20

Consider the following class definitions:Which of the following correctly sets the values of x and y?

Accepted Answer

A)  void dClass: :setXY (int $ a $, int b)
{
bClass: : setx (a);
$ y=b ; $
} 
B)  void dClass: setXY (int $ a $, int b)
{
$ \mathrm{x}=\mathrm{a} $;
$ y=b ; $
} 
C)  void dClass: setXY (int a, int b)
{
$ x= $ bClass: : set $ (a) $;
$ y= $ bClass: : setY (b);
} 
D)  void dClass: setXY (int a, int b)
{
$ x= $ bClass.setx (a);
$ \mathrm{b}=\mathrm{y} ; $
} 
A)  void dClass: :setXY (int $ a $, int b)
{
bClass: : setx (a);
$ y=b ; $
} 
B)  void dClass: setXY (int $ a $, int b)
{
$ \mathrm{x}=\mathrm{a} $;
$ y=b ; $
} 
C)  void dClass: setXY (int a, int b)
{
$ x= $ bClass: : set $ (a) $;
$ y= $ bClass: : setY (b);
} 
D)  void dClass: setXY (int a, int b)
{
$ x= $ bClass.setx (a);
$ \mathrm{b}=\mathrm{y} ; $
}

Exam 11: Inheritance and Composition

The class io is the base class of the C++ stream classes istream and ostream.

The preprocessor directive ____________________ is used to prevent multiple inclusions of a header file in a program.

____ is the ability to use the same expression to denote different operations.

Which of the following is true about inheritance?

In protected inheritance, public and protected members of the base class become the protected members of the derived class.

Which of the following class definitions makes the public members of the class aClass become the public members of the class bClass?

What is the output of the following program?

If the derived class classD overrides a public member function functionName of the base class classB, then to specify a call to that public member function of the base class, you use the statement ____.

Suppose that bClass is a class.Which of the following statements correctly derives the class dClass from bClass?

The new classes that we create from existing classes are called ____ classes.

____ is a "has-a" relationship.

Which of the following statements about inheritance is true if memberAccessSpecifier is protected?

The ____ members of an object form its external state.

C++ provides ____ functions as a means to implement polymorphism in an inheritance hierarchy, which allows the run-time selection of appropriate member functions.

In OOD, a program is a collection of interacting ____________________; in structured programming, a program is a collection of interacting functions.

A derived class cannot directly access public members of a base class.

Existing classes, from which you create new classes, are called ____ classes.

Classes can create new classes from existing classes.This important feature ____.

____ is the ability to combine data, and operations on that data, in a single unit.

Consider the following class definitions:Which of the following correctly sets the values of x and y?

An Overview of Computers and Programming Languages

Basic Elements of C++

Inputoutput

Control Structures I Selection

Control Structures Ii Repetition

User-Defined Function

Namespaces, the Class String, and User-Defined Simple Data Types

Arrays

Records Structs

Classes and Data Abstraction

Pointers, Classes, Virtual Functions, and Abstract Classes

Operator Overloading and Templates

Exception Handling

Recursion

Linked Lists

Stacks and Queue

Searching and Sorting Algorithms

Binary Trees

Graph Algorithms

Standard Template Library

Filters