Question 1

Which of the following function declarations would be correct to overload the multiply operator for the Rational numbers class?

Accepted Answer

A)  friend Rational operator timesconst Rational &left, const Rational &right); 
B)  Rational operator timesconst Rational &left, const Rational &right); 
C)  friend Rational operator *const Rational &left, const Rational &right); 
D)  Rational operator *const Rational &left, const Rational &right); 
A)  friend Rational operator timesconst Rational &left, const Rational &right); 
B)  Rational operator timesconst Rational &left, const Rational &right); 
C)  friend Rational operator *const Rational &left, const Rational &right); 
D)  Rational operator *const Rational &left, const Rational &right);

Question 2

You may not change the precedence of operators by overloading them

Accepted Answer

A) True 
 B)False

Question 3

Which of the following statements are true?

Accepted Answer

A)  Array elements may be user-defined types structs or classes) 
B)  If a function is expecting a variable of the base type of the array, then you can pass an element of the array to the function. 
C)  All of the above. 
D)  None of the above. 
A)  Array elements may be user-defined types structs or classes) 
B)  If a function is expecting a variable of the base type of the array, then you can pass an element of the array to the function. 
C)  All of the above. 
D)  None of the above.

Question 4

What happens when you define a class that used dynamic memory allocation and define a destructor but no copy constructor?

Accepted Answer

A)  If an object of the class is plugged in for a call-by-value parameter, when the function ends, the parameter's dynamic memory is returned to the freestore at the end of the function execution. 
B)  When an object that was used as an argument for a call-by-value parameter goes out of scope, it will cause a run-time error. 
C)  It is possible to modify the values in the argument in the function. 
D)  All of the above 
E)  None of the above 
A)  If an object of the class is plugged in for a call-by-value parameter, when the function ends, the parameter's dynamic memory is returned to the freestore at the end of the function execution. 
B)  When an object that was used as an argument for a call-by-value parameter goes out of scope, it will cause a run-time error. 
C)  It is possible to modify the values in the argument in the function. 
D)  All of the above 
E)  None of the above

Question 5

Functions that are constant member functions may call constant class accessor functions.

Accepted Answer

A) True 
 B)False

Question 6

Both the copy constructor and the assignment operator should make ___________

Accepted Answer

a complete and indep

Question 7

Functions that are constant member functions may call the class mutator functions.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following are not correct?

Accepted Answer

A)  The destructor of a class is not named the same as the name of the class, but preceded with a tilde 
B)  The destructor of a class is not called when an object of the class goes out of scope 
C)  The destructor of a class is not a member of the class 
D)  The destructor of a class is a void function 
E)  all of the above 
A)  The destructor of a class is not named the same as the name of the class, but preceded with a tilde 
B)  The destructor of a class is not called when an object of the class goes out of scope 
C)  The destructor of a class is not a member of the class 
D)  The destructor of a class is a void function 
E)  all of the above

Question 9

What is wrong with the following overloaded extraction operator declaration?
Istream& operator >>istream& in, const myClass &object);

Accepted Answer

A)  Object should not be a pass by reference parameter 
B)  Object should not be a const parameter 
C)  You can not put the & on the return type 
D)  nothing 
A)  Object should not be a pass by reference parameter 
B)  Object should not be a const parameter 
C)  You can not put the & on the return type 
D)  nothing

Question 10

Operators can be overloaded as

Accepted Answer

A)  friends of a class 
B)  members of a class 
C)  non-friends, non-members of a class 
D)  All of the above 
A)  friends of a class 
B)  members of a class 
C)  non-friends, non-members of a class 
D)  All of the above

Question 11

To overload functions with symbolic names like + - / <<), you must use the keyword _______ before the symbolic name.

Accepted Answer

A)  const 
B)  operator 
C)  reference 
D)  void 
A)  const 
B)  operator 
C)  reference 
D)  void

Question 12

Given the following class, what is syntactically wrong with the implementation of the display function?
Class Rational
{
Public:
Rational);
Rationalint numer, int denom);
Rationalint whole);
Int getNumerator);
Int getDenominator);
Friend void displayostream& out, const Rational& value);
Private:
Int numerator;
Int denominator;
};
Void displayostream& out, const Rational& value)
{
Out << value.getNumerator) << '/"<<value.getDenominator);
}

Accepted Answer

A)  nothing 
B)  value must be not be pass by reference 
C)  The get functions are not const functions 
D)  out should be pass by value 
A)  nothing 
B)  value must be not be pass by reference 
C)  The get functions are not const functions 
D)  out should be pass by value

Question 13

Given the following class and array declaration, how would you print out the age of the 10th person in the array?
Class personClass
{
Public:
Void setAgeint newAge);
Void setGender char newGender);
Void setSalaryfloat newSalary);
Int getAge);
Char getGender);
Float getSalary);
Private:
Int age;
Char gender;
Float salary;
};
PersonClass people[100];

Accepted Answer

A)  cout << people[10]; 
B)  cout << people[9]; 
C)  cout << people[9].age; 
D)  cout << people[9].getAge); 
A)  cout << people[10]; 
B)  cout << people[9]; 
C)  cout << people[9].age; 
D)  cout << people[9].getAge);

Question 14

Putting the keyword const in front of a pass by reference parameter guarantees ___________________

Accepted Answer

that the f

Question 15

When a dynamic array with a class for a base type is declared, which constructor is called?

Accepted Answer

A)  the copy constructor 
B)  the destructor 
C)  the default constructor 
D)  an explicit constructor 
A)  the copy constructor 
B)  the destructor 
C)  the default constructor 
D)  an explicit constructor

Question 16

Why should you generally pass an object of the class to a friend function as a reference parameter?

Accepted Answer

A)  If the friend function changes the values of the data members). 
B)  If the friend function will not change the values of the data members). 
C)  It is more efficient to pass the object by reference. 
D)  A and B 
E)  A and C 
A)  If the friend function changes the values of the data members). 
B)  If the friend function will not change the values of the data members). 
C)  It is more efficient to pass the object by reference. 
D)  A and B 
E)  A and C

Which of the following function declarations would be correct to overload the multiply operator for the Rational numbers class?

You may not change the precedence of operators by overloading them

Which of the following statements are true?

What happens when you define a class that used dynamic memory allocation and define a destructor but no copy constructor?

Functions that are constant member functions may call constant class accessor functions.

Both the copy constructor and the assignment operator should make ___________

Functions that are constant member functions may call the class mutator functions.

Which of the following are not correct?

What is wrong with the following overloaded extraction operator declaration? Istream& operator >>istream& in, const myClass &object);

Operators can be overloaded as

To overload functions with symbolic names like + - / <<), you must use the keyword _______ before the symbolic name.

Putting the keyword const in front of a pass by reference parameter guarantees ___________________

When a dynamic array with a class for a base type is declared, which constructor is called?

Why should you generally pass an object of the class to a friend function as a reference parameter?

Introduction to Computer and C++ Programming

C++ Basics

More Flow of Control

Procedural Abstraction and Functions That Return a Value

Functions for All Sub Tasks

Io Streams As an Introduction to Objects and Classes

Arrays

Strings and Vectors

Pointers and Dynamic Arrays

Defining Classes

Separate Compilation and Namespaces

Pointers and Linked Lists

Recursion

Inheritance

Exception Handling

Templates

Standard Template Library

Filters

Exam 11: Friends, Overloaded Operators, and Arrays in Classes

Which of the following function declarations would be correct to overload the multiply operator for the Rational numbers class?

You may not change the precedence of operators by overloading them

Which of the following statements are true?

What happens when you define a class that used dynamic memory allocation and define a destructor but no copy constructor?

Functions that are constant member functions may call constant class accessor functions.

Both the copy constructor and the assignment operator should make ___________

Functions that are constant member functions may call the class mutator functions.

Which of the following are not correct?

What is wrong with the following overloaded extraction operator declaration? Istream& operator >>istream& in, const myClass &object);

Operators can be overloaded as

To overload functions with symbolic names like + - / <<), you must use the keyword _______ before the symbolic name.

Putting the keyword const in front of a pass by reference parameter guarantees ___________________

When a dynamic array with a class for a base type is declared, which constructor is called?

Why should you generally pass an object of the class to a friend function as a reference parameter?

Introduction to Computer and C++ Programming

C++ Basics

More Flow of Control

Procedural Abstraction and Functions That Return a Value

Functions for All Sub Tasks

Io Streams As an Introduction to Objects and Classes

Arrays

Strings and Vectors

Pointers and Dynamic Arrays

Defining Classes

Separate Compilation and Namespaces

Pointers and Linked Lists

Recursion

Inheritance

Exception Handling

Templates

Standard Template Library

Filters