Final

Question 1

Which of the following statements is true regarding classes and objects?

Answer 1

Member data of a class is in scope inside its member function definitions.

Question 2

For a class called Monster, which of the following is a conversion constructor, enabling automatic type conversions from type Human to type Monster?

Answer 2

Monster(Human x);

Question 3

Which of the following would result in a fatal run-time error?

Answer 3

Doing the division (x/y), where x and y are integers and y is 0.

Question 4

In a class, the typical purpose of a destructor member function is…

Answer 4

To do any final clean-up tasks on an object before it is deallocated.

Question 5

Which of the following statements about operator overloading is true?

Answer 5

Operator overloading cannot be used to create new operator symbols.

Question 6

Which of the following describes an implementation of the composition (‘has-a’) relationship?

Answer 6

An object of type Rabbit is declared as member data of class Forest.

Question 7

Which of the following is not a valid operator overload prototype? (Phrase is a class)

Answer 7

bool operator!< (const Phrase& a, const Phrase& b);

Question 8

Which of the following is a function that will only allow an L-value to be passed as a parameter? (Assume that Icon is a class)

Answer 8

int Compute(Icon & i) const;

Question 9

Which of the following is the most appropriate declaration of an accessor function for a class called Grade?

Answer 9

double GetValue() const;

Question 10

Which of the following is a correct way to declare a member function of a class so that it will be guaranteed to not change the member data of the calling object?

Answer 10

int Convert(float& x) const;

Question 11

If a binary operator is overloaded and written as a member function of a class, the function takes one parameter

Answer 11

True

Question 12

The command “g++ -o employee.cpp” invokes the compile stage but not the linking stage of the compilation process.

Answer 12

False

Question 12

An L-value is an expression that represents a modifiable storage location.

Answer 12

True

Question 12

A friend of a class has access only to the public section of that class.

Answer 12

False

Question 13

A class may have more than one destructor.

Answer 13

False

Question 13

Function calls are matched to their definitions during the compiling stage of a program build (not during the linking stage).

Answer 13

False

Question 14

If a member data variable of a class is declared to be static, then there is only one copy of it that is shared by all objects of the class.

Answer 14

True

Question 15

A conversion constructor is a constructor that can be called with only one parameter passed in.

Answer 15

True

Question 16

A constant object may only make calls to const member functions.

Answer 16

True

Question 17

Every class has a default constructor

Answer 17

False

Question 18

If pList is an array of pointers to objects of type Politician, then which of the following is syntactically correct call to the Lie() function of the politician class?

Answer 18

pList[0]->Lie();

Question 19

Which of the following functions must always exist for a class? (i.e. if you do not create one, the compiler will create one automatically)

Answer 19

operator=

Question 20

Which of the following is a correct prototype for the assignment operator overload member function in a class called Book?

Answer 20

Book& operator=(const Book &);

Question 21

A function in a derived class that has the same prototype as a function in its base class is said to _____ the base class function

Answer 21

override

Question 22

Given a pointer declared as voter* precinct; (where voter is a class). How does one dynamically allocate an array of 500 voter objects?

Answer 22

precinct = new voter[500];

Question 23

Which of the following statements correctly de-allocates the dynamic array created in the last question?

Answer 23

delete [] precinct;

Question 24

From inside a member function, the keyword “this” acts as…

Answer 24

A pointer to a calling object

Question 25

If Penguin is a class and p1 and p2 are objects of type Penguin, in which of the following statements or situations is the class’ copy constructor NOT invoked?

Answer 25

When p1 is passed into a function by const reference.

Question 26

Given the declaration: double* dptr; Which of the following can be legally assigned into dptr?

Answer 26

The variable numbers, declared as follows: double numbers[10];

Question 27

Suppose Pokemon is an abstract class, and Snorlax is a class that is derived from Pokemon. Which of the following declarations is illegal?

Answer 27

Pokemon pauly;

Question 28

After the following code statements, what will print to the screen?
char game[] = {‘C’, ‘h’, ‘e’, ‘s’, ‘s’};
char buffer[10];
strcpy(buffer, game);
cout &laquo_space;buffer;

Answer 28

The word Chess, and possibly some other random characters after.

Question 29

Consider the declaration: virtual double Sing(int x) = 0; Assume this declaration is in a class called Tenor. The “= 0” on this declaration means?

Answer 29

The Sing function will not be defined for the Tenor class.

Question 30

All arrays of type char are considered C-style string.

Answer 30

False

Question 31

The shallow copy is sufficient for an object as long as the object does not have any object or arrays as member data

Answer 31

False

Question 32

The keyword virtual is used to delay the binding of function call to definition so that it’s done at run time, instead of compile time.

Answer 32

True

Question 33

The keyword virtual is used to delay the binding of function call to definition so that it’s done at run time, instead of compile time.

Answer 33

True

Question 34

If class Z is derived from class D, a pointer of type (D *) can point to an object of type Z

Answer 34

True

Question 35

A protected member function of class X is accessible from class X and from inside any class from which X is derived

Answer 35

False

Question 36

A bit is the smallest unit of storage in a computer

Answer 36

True

Question 37

If ptr is a pointer then *ptr refers to the target of that pointer

Answer 37

True

Question 38

cstring library functions, like strcpy, will protect the caller from overflowing array boundaries on character arrays

Answer 38

False