Question 1

If the line:
Friend class A;
Appears in class B, and the line:
Friend class B;
Appears in class C, then:

Accepted Answer

A)   Class A is a friend of class C.
B)   Class A can access private variables of class B.
C)   Class C can call class A's private member functions.
D)   Class B can access class A's private variables.E) B) and D)
F) A) and D) B

Question 2

An error occurs if:

Accepted Answer

A)   A non-reference, non-const, primitive data member is initialized in the member initialization list.
B)   An object data member is not initialized in the member initialization list.
C)   An object data member does not have a default constructor.
D)   An object data member is not initialized in the member initialization list and does not have a default constructor.E) B) and D)
F) B) and C)

Question 3

Which of the following are true about an abstract data type?
I. Captures a data representation.
II. Defines the operations that are allowed on its data.
III. Replaces structured programming.

Accepted Answer

A)   I, II and III.
B)   I and II.
C)   I and III.
D)   II and III.E) A) and D)
F) B) and C)

Question 4

When composition one object having another object as a member)  is used:

Accepted Answer

A)   The host object is constructed first and then the member objects are placed into it.
B)   Member objects are constructed first, in the order they appear in the host constructor's initializer list.
C)   Member objects are constructed first, in the order they are declared in the host's class.
D)   Member objects are destructed last, in the order they are declared in the host's class.E) A) and B)
F) A) and C)

Question 5

Assume that t is an object of class Test, which has member functions a) , b) , c)  and d) . If the functions a) , b)  and c)  all return references to an object of class Test using the dereferenced this pointer)  and function d)  returns void, which of the following statements will not produce a syntax error:

Accepted Answer

A)   t.a) .b) .d) ;
B)   a) .b) .t;
C)   t.d) .c) ;
D)   t.a) .t.d) ;E) A) and B)
F) A) and C) A

Question 6

Static data members of a certain class:

Accepted Answer

A)   Can be accessed only if an object of that class exists.
B)   Cannot be changed, even by objects of the same that class.
C)   Have class scope.
D)   Can only be changed by static member functions.E) B) and C)
F) A) and D)

Question 7

The numbers 3, 2, 5, 7 are enqueued in a queue in that order, then three numbers are dequeued, and finally 3, 7, 9, 4 are enqueued in that order. What is the first number in the queue the next number to be dequeued) ?

Accepted Answer

A)   3
B)   7
C)   9
D)   4E) C) and D)
F) B) and C)

Question 8

Which of the following is not true about friend functions and friend classes?

Accepted Answer

A)   A class can either grant friendship to or take friendship from another class using the friend keyword.
B)   A friend declaration can appear anywhere in a class definition.
C)   A friend of a class can access all of its private data member and member functions.
D)   The friendship relationship is neither symmetric nor transitive.E) B) and D)
F) B) and C)

Question 9

Increment i ) 
{
Count = c;
}
Does not cause any compilation errors. This tells you that:

Accepted Answer

A)   count must be a non-const variable.
B)   count must be a const variable.
C)   increment must be a non-const variable.
D)   increment must be a const variable.E) A) and C)
F) B) and D)

Question 10

Static member functions:

Accepted Answer

A)   Can use the this pointer.
B)   Can access only other static member functions and static data members.
C)   Cannot be called until an object of their class is instantiated.
D)   Can be declared const as well.E) B) and C)
F) C) and D)

Question 11

Which of the following is not an abstract data type?

Accepted Answer

A)   An int.
B)   A user-defined class.
C)   A for loop.
D)   None of the above are abstract data types.E) B) and D)
F) A) and B)

Question 12

For a non-constant member function of class Test, the this pointer has type:

Accepted Answer

A)   const Test *
B)   Test * const
C)   Test const *
D)   const Test * constE) None of the above
F) C) and D)

Question 13

If Americans are objects of the same class, which of the following attributes would most likely be represented by a static variable of that class?

Accepted Answer

A)   Age.
B)   The President.
C)   Place of birth.
D)   Favorite food.E) A) and B)
F) A) and C) B

Question 14

Inside a function definition for a member function of an object with data element x, which of the following is not equivalent to this->x:

Accepted Answer

A)   *this.x
B)   *this) .x
C)   x
D)   * & *this)  )  ) .xE) All of the above
F) A) and C)

Question 15

Which of the following statements will not produce a syntax error?

Accepted Answer

A)   Defining a const member function that modifies a data member of the object.
B)   Invoking a non-const member function on a const object.
C)   Declaring an object to be const.
D)   Declaring a constructor to be const.E) A) and D)
F) B) and C)

Exam 10: Classes: a Deeper Look, Part 2

If the line: Friend class A; Appears in class B, and the line: Friend class B; Appears in class C, then:

Correct Answer
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B

An error occurs if:

Correct Answer
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Which of the following are true about an abstract data type? I. Captures a data representation. II. Defines the operations that are allowed on its data. III. Replaces structured programming.

Correct Answer
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When composition one object having another object as a member) is used:

Correct Answer
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Correct Answer
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A

Static data members of a certain class:

Correct Answer
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The numbers 3, 2, 5, 7 are enqueued in a queue in that order, then three numbers are dequeued, and finally 3, 7, 9, 4 are enqueued in that order. What is the first number in the queue the next number to be dequeued) ?

Correct Answer
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Which of the following is not true about friend functions and friend classes?

Correct Answer
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Increment i ) { Count = c; } Does not cause any compilation errors. This tells you that:

Correct Answer
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Static member functions:

Correct Answer
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Which of the following is not an abstract data type?

Correct Answer
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For a non-constant member function of class Test, the this pointer has type:

Correct Answer
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If Americans are objects of the same class, which of the following attributes would most likely be represented by a static variable of that class?

Correct Answer
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B

Inside a function definition for a member function of an object with data element x, which of the following is not equivalent to this->x:

Correct Answer
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Which of the following statements will not produce a syntax error?

Correct Answer
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Exam 10: Classes: a Deeper Look, Part 2

If the line: Friend class A; Appears in class B, and the line: Friend class B; Appears in class C, then:

Correct AnswerverifiedB

An error occurs if:

Correct AnswerverifiedShow Answer

Which of the following are true about an abstract data type? I. Captures a data representation. II. Defines the operations that are allowed on its data. III. Replaces structured programming.

Correct AnswerverifiedShow Answer

When composition one object having another object as a member) is used:

Correct AnswerverifiedShow Answer

Correct AnswerverifiedA

Static data members of a certain class:

Correct AnswerverifiedShow Answer

The numbers 3, 2, 5, 7 are enqueued in a queue in that order, then three numbers are dequeued, and finally 3, 7, 9, 4 are enqueued in that order. What is the first number in the queue the next number to be dequeued) ?

Correct AnswerverifiedShow Answer

Which of the following is not true about friend functions and friend classes?

Correct AnswerverifiedShow Answer

Increment i ) { Count = c; } Does not cause any compilation errors. This tells you that:

Correct AnswerverifiedShow Answer

Static member functions:

Correct AnswerverifiedShow Answer

Which of the following is not an abstract data type?

Correct AnswerverifiedShow Answer

For a non-constant member function of class Test, the this pointer has type:

Correct AnswerverifiedShow Answer

If Americans are objects of the same class, which of the following attributes would most likely be represented by a static variable of that class?

Correct AnswerverifiedB

Inside a function definition for a member function of an object with data element x, which of the following is not equivalent to this->x:

Correct AnswerverifiedShow Answer

Which of the following statements will not produce a syntax error?

Correct AnswerverifiedShow Answer

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B

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A

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B

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