Question 1

If you want to create an array of class objects such as House aHouse[3] , the class must have a default ____________________.

Accepted Answer

The answer of If you want to create an array...

Question 2

What does it mean to overload a constructor?

Accepted Answer

The answer of What does it mean to overload a...

Question 3

A(n) ____________________ constructor is one that does not require any arguments.

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The answer of A(n) ____________________ constructor is one that does...

Question 4

How do constructor functions differ from other member functions?

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The answer of How do constructor functions differ from other...

Question 5

____ refers to how well the operations in a function relate to one another.
A) Encapsulation
B) Abstraction
C) Cohesion
D) Coupling

Accepted Answer

Cohesion refers to how well the operations in a function relate to one another, indicating how well-separated the functionalities are within a single module.

Question 6

The ____ directive means that you have reached the end of the block of code that you are defining.
A) #define
B) #endif
C) #ifdef
D) #ifndef

Accepted Answer

The #endif directive is used to mark the end of a block of code that is defined by a corresponding #ifdef or #ifndef directive. The #define directive is used to define a macro, while the #ifdef and #ifndef directives are used to check if a certain macro is defined or not.

Question 7

The C++ directive ____ allows you to test whether a class has already been defined in a project; it means "if not defined."
A) #define
B) #endif
C) #ifdef
D) #ifndef

Accepted Answer

The directive #ifndef means "if not defined" and is used to prevent multiple definitions of a class in a project.

Question 8

____ cohesion occurs when all of the function operations contribute to the performance of only one task.
A) Functional
B) Procedural
C) Complete
D) Default

Accepted Answer

Functional cohesion occurs when all function operations contribute to the performance of only one task, which makes it the best fit for the given description. Procedural cohesion refers to when functions contribute to a procedural sequence of operations, Complete cohesion means all function operations perform the same task, and Default cohesion refers to when functions are grouped together for no apparent reason.

Question 9

Using an object within another object is known as ____________________.

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The answer of Using an object within another object is...

Question 10

____ are simple routines that do nothing (or very little).
A) Prototypes
B) Initialization lists
C) Stubs
D) Auxiliary functions

Accepted Answer

Stubs are placeholders for code that has not yet been implemented or for code that should not be executed in a particular context. They are simple routines that typically do nothing or return a predetermined value, and are often used in testing, prototyping, or for temporarily replacing a missing or non-functional section of code.

Question 11

Implement a default constructor for the following class: 
class Employee 
{ 
private: 
int idNum; 
double hourlyRate; 
public: 
Employee(); 
void setIdNum(const int); 
void setHourlyRate(const double); 
int getIdNum(); 
double getHourlyRate(); 
};

Accepted Answer

The answer of Implement a default constructor for the following...

Question 12

What are the four special member functions that every C++ class object automatically has?

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The answer of What are the four special member functions...

Question 13

Why is it a good idea to implement your own default constructor, rather than letting C++ provide one?

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The answer of Why is it a good idea to...

Question 14

What does the default destructor of a class do?

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The answer of What does the default destructor of a...

Question 15

____ is a measure of the strength of the connection between two functions; it expresses the extent to which information is exchanged by functions.
A) Encapsulation
B) Abstraction
C) Cohesion
D) Coupling

Accepted Answer

Coupling refers to the degree of interdependence between two functions. It measures how much each function relies on the other and how much information they exchange. A high degree of coupling indicates strong interdependence, while low coupling indicates more independence between functions.

Question 16

The following code shows an example of ____:
Double square(double number)
{
Return (number * number);
}
A) coupling
B) tight coupling
C) loose coupling
D) functional cohesion

Accepted Answer

The code represents functional cohesion, as the purpose of the "square" function is clearly defined and only performs one task, which is to calculate the square of a given number. There is no indication of coupling in the code, nor does it relate to the concept of cohesion.

Question 17

Why must a constructor have the same name as its class?

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Question 18

In highly ____________________ functions, all operations are related.

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Question 19

A(n) ____________________ list provides constructor-required values for the member-objects.

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The answer of A(n) ____________________ list provides constructor-required values for...

Question 20

A(n) ____________________ constructor is one that requires at least one argument.

Accepted Answer

The answer of A(n) ____________________ constructor is one that requires...

Quiz 8: Class Features and Design Issues

If you want to create an array of class objects such as House aHouse[3] , the class must have a default ____________________.

What does it mean to overload a constructor?

A(n) ____________________ constructor is one that does not require any arguments.

How do constructor functions differ from other member functions?

____ refers to how well the operations in a function relate to one another.

The ____ directive means that you have reached the end of the block of code that you are defining.

The C++ directive ____ allows you to test whether a class has already been defined in a project; it means "if not defined."

____ cohesion occurs when all of the function operations contribute to the performance of only one task.

Using an object within another object is known as ____________________.

____ are simple routines that do nothing (or very little) .

Implement a default constructor for the following class: class Employee { private: int idNum; double hourlyRate; public: Employee(); void setIdNum(const int); void setHourlyRate(const double); int getIdNum(); double getHourlyRate(); };