Question 1

Returning references to non-const, private data:

Accepted Answer

A)  Allows private functions to be modified. 
B)  Is only dangerous if the binary scope resolution operator ::) is used in the function prototype. 
C)  Allows private member variables to be modified, thus "breaking encapsulation." 
D)  Results in a compiler error. 
A)  Allows private functions to be modified. 
B)  Is only dangerous if the binary scope resolution operator ::) is used in the function prototype. 
C)  Allows private member variables to be modified, thus "breaking encapsulation." 
D)  Results in a compiler error. C

Question 2

Utility functions:

Accepted Answer

A)  Are private member functions that support operations of the class's other member functions. 
B)  Are part of a class's interface. 
C)  Are intended to be used by clients of a class. 
D)  Are a type of constructor. 
A)  Are private member functions that support operations of the class's other member functions. 
B)  Are part of a class's interface. 
C)  Are intended to be used by clients of a class. 
D)  Are a type of constructor. A

Question 3

Member access specifiers public and private) can appear:

Accepted Answer

A)  In any order and multiple times. 
B)  In any order public first or private first) but not multiple times. 
C)  In any order and multiple times, if they have brackets separating each type. 
D)  Outside a class definition. 
A)  In any order and multiple times. 
B)  In any order public first or private first) but not multiple times. 
C)  In any order and multiple times, if they have brackets separating each type. 
D)  Outside a class definition. A

Question 4

When compiling a class's source code file which does not contain a main function), the information in the class's header file is used for all of the following, except:

Accepted Answer

A)  Ensuring that the header of each member function matches its prototype. 
B)  Ensuring that each member function knows about the class's data members and other member functions. 
C)  Determining the correct amount of memory to allocate for each object of the class. 
D)  All of the above are uses that the compiler has for the header file information. 
A)  Ensuring that the header of each member function matches its prototype. 
B)  Ensuring that each member function knows about the class's data members and other member functions. 
C)  Determining the correct amount of memory to allocate for each object of the class. 
D)  All of the above are uses that the compiler has for the header file information.

Question 5

Member function definitions:

Accepted Answer

A)  Always require the binary scope operator ::). 
B)  Require the binary scope operator only when being defined outside of the definition of their class. 
C)  Can use the binary scope operator anywhere, but become public functions. 
D)  Must use the binary scope operator in their function prototype. 
A)  Always require the binary scope operator ::). 
B)  Require the binary scope operator only when being defined outside of the definition of their class. 
C)  Can use the binary scope operator anywhere, but become public functions. 
D)  Must use the binary scope operator in their function prototype.

Question 6

Parameterized stream manipulator setfill specifies the fill character that's displayed when an output is displayed in a field wider than the number of characters or digits in the output. The effect of setfill applies:

Accepted Answer

A)  Only to the current value being displayed. 
B)  Only to outputs displayed in the current statement. 
C)  Until explicitly set to a different setting. 
D)  Until the output buffer is flushed. 
A)  Only to the current value being displayed. 
B)  Only to outputs displayed in the current statement. 
C)  Until explicitly set to a different setting. 
D)  Until the output buffer is flushed.

Question 7

Calling a member function of an object requires which item?

Accepted Answer

A)  The dot operator. 
B)  Open and close braces. 
C)  The class name. 
D)  None of the above. 
A)  The dot operator. 
B)  Open and close braces. 
C)  The class name. 
D)  None of the above.

Question 8

Which of the following statements is not true of a destructor?
a. It performs termination housekeeping.
b. It's called before the system reclaims the object's memory.
c. If the programmer does not explicitly provide a destructor, the compiler creates an "empty" destructor.
d. It releases the object's memory.

Accepted Answer

d It relea

Question 9

Attributes of a class are also known as:

Accepted Answer

A)  Constructors. 
B)  Local variables. 
C)  Data members. 
D)  Classes. 
A)  Constructors. 
B)  Local variables. 
C)  Data members. 
D)  Classes.

Question 10

A class-scope variable hidden by a block-scope variable can be accessed by preceding the variable name with the class name followed by:

Accepted Answer

A)  :: 
B)  : 
C)  . 
D)  -> 
A)  :: 
B)  : 
C)  . 
D)  ->

Question 11

In the source-code file containing a class's member function definitions, each member function definition must be tied to the class definition by preceding the member function name with the class name and ::, which is known as the:

Accepted Answer

A)  Member definition linker. 
B)  Class implementation connector. 
C)  Source code resolver. 
D)  Binary scope resolution operator. 
A)  Member definition linker. 
B)  Class implementation connector. 
C)  Source code resolver. 
D)  Binary scope resolution operator.

Question 12

If a member function of a class already provides all or part of the functionality required by a constructor or another member function then:

Accepted Answer

A)  Copy and paste that member function's code into this constructor or member function. 
B)  Call that member function from this constructor or member function. 
C)  That member function is unnecessary. 
D)  This constructor or member function is unnecessary. 
A)  Copy and paste that member function's code into this constructor or member function. 
B)  Call that member function from this constructor or member function. 
C)  That member function is unnecessary. 
D)  This constructor or member function is unnecessary.

Question 13

Which of the following statements is not true of a constructor and destructor of the same class?

Accepted Answer

A)  They both have the same name aside from the tilde ~) character. 
B)  They are both usually called once per object created. 
C)  They both are able to have default arguments. 
D)  Both are called automatically, even if they are not explicitly defined in the class. 
A)  They both have the same name aside from the tilde ~) character. 
B)  They are both usually called once per object created. 
C)  They both are able to have default arguments. 
D)  Both are called automatically, even if they are not explicitly defined in the class.

Question 14

When independent software vendors provide class libraries to clients, they typically give the __________ for the class's interface and the __________ for the class's implementation.

Accepted Answer

A)  Source code file, source code file. 
B)  Source code file, object file. 
C)  Object file, source code file. 
D)  Object file, object file. 
A)  Source code file, source code file. 
B)  Source code file, object file. 
C)  Object file, source code file. 
D)  Object file, object file.

Question 15

A constructor can specify the return type:

Accepted Answer

A)  int. 
B)  string. 
C)  void. 
D)  A constructor cannot specify a return type. 
A)  int. 
B)  string. 
C)  void. 
D)  A constructor cannot specify a return type.

Question 16

Classes cannot:

Accepted Answer

A)  Be derived from other classes. 
B)  Initialize data members in the class definition. 
C)  Be used to model attributes and behaviors of objects. 
D)  Include objects from other classes as members. 
A)  Be derived from other classes. 
B)  Initialize data members in the class definition. 
C)  Be used to model attributes and behaviors of objects. 
D)  Include objects from other classes as members.

Question 17

All of the following are true about classes, except:

Accepted Answer

A) Classes have attributes and behaviors. 
B) The first class in any C++ program is main. 
C) An object must be created from a class before it can be used. 
D) A class's functions hide from the user the complex tasks they perform. 
A) Classes have attributes and behaviors. 
B) The first class in any C++ program is main. 
C) An object must be created from a class before it can be used. 
D) A class's functions hide from the user the complex tasks they perform.

Question 18

Given the class definition:
Class CreateDestroy
{
Public:
CreateDestroy) { cout << "constructor called, "; }
~CreateDestroy) { cout << "destructor called, "; }
};
What will the following program output?
Int main)
{
For int i = 1; i <= 2; i++ )
CreateDestroy cd;
Return 0;
}

Accepted Answer

A)  constructor called, destructor called, constructor called, destructor called, 
B)  constructor called, constructor called, 
C)  constructor called, constructor called, destructor called, destructor called, 
D)  Nothing. 
A)  constructor called, destructor called, constructor called, destructor called, 
B)  constructor called, constructor called, 
C)  constructor called, constructor called, destructor called, destructor called, 
D)  Nothing.

Question 19

Assuming that Grades.h is found in the current directory and the iostream header file is found in the C++ Standard Library header file directory, which of the following preprocessor directives will fail to find its desired header file?

Accepted Answer

A) #include B) #include "iostream" C) #include D) #include "Grades.h" A) #include B) #include "iostream" C) #include D) #include "Grades.h"

Question 20

Which of the following preprocessor directives does not constitute part of the preprocessor wrapper?

Accepted Answer

A)  #define 
B)  #endif 
C)  #ifndef 
D)  #include 
A)  #define 
B)  #endif 
C)  #ifndef 
D)  #include

Exam 9: Classes

Returning references to non-const, private data:

Utility functions:

Member access specifiers public and private) can appear:

When compiling a class's source code file which does not contain a main function), the information in the class's header file is used for all of the following, except:

Member function definitions:

Parameterized stream manipulator setfill specifies the fill character that's displayed when an output is displayed in a field wider than the number of characters or digits in the output. The effect of setfill applies:

Calling a member function of an object requires which item?

Attributes of a class are also known as:

A class-scope variable hidden by a block-scope variable can be accessed by preceding the variable name with the class name followed by:

In the source-code file containing a class's member function definitions, each member function definition must be tied to the class definition by preceding the member function name with the class name and ::, which is known as the:

If a member function of a class already provides all or part of the functionality required by a constructor or another member function then:

Which of the following statements is not true of a constructor and destructor of the same class?

When independent software vendors provide class libraries to clients, they typically give the __________ for the class's interface and the __________ for the class's implementation.

A constructor can specify the return type:

Classes cannot:

All of the following are true about classes, except:

Given the class definition: Class CreateDestroy { Public: CreateDestroy) { cout << "constructor called, "; } ~CreateDestroy) { cout << "destructor called, "; } }; What will the following program output? Int main) { For int i = 1; i <= 2; i++ ) CreateDestroy cd; Return 0; }

Assuming that Grades.h is found in the current directory and the iostream header file is found in the C++ Standard Library header file directory, which of the following preprocessor directives will fail to find its desired header file?

Which of the following preprocessor directives does not constitute part of the preprocessor wrapper?

Introduction to Computers, the Internet and the World Wide Web

Introduction to C Programming

Control Statements, Part 1

Control Statements, Part 2

Functions and an Introduction to Recursion

Arrays and Vectors

Pointers and Pointer-Based Strings

Sequential-Access Files

Classes: a Deeper Look, Part 2

Operator Overloading; String and Array Objects

Object-Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

Templates

Stream Inputoutput

Exception Handling

File Processing

Class String and String Stream Processing

Searching and Sorting

Data Structures

Standard Template Library Stl

Bits, Characters, C Strings and Structs

Boost Libraries, Technical Report 1 and C0x

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ATM Case Study, Part 1: Object-Oriented Design With the Uml

ATM Case Study, Part 2: Implementing an Object-Oriented Design

Game Programming With Ogre

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When independent software vendors provide class libraries to clients, they typically give the for the class's interface and the for the class's implementation.