CPP225 Enumerations and Structures Quiz

Play an AI-generated podcast conversation about this lesson

What is an enumeration in object-oriented programming?

A class that contains only static methods

A predefined data type with a set of name-value pairs (correct)

A data type used to store a single value

An array with named elements

What is the default initial value of the first element in an enumeration?

100

10

0 (correct)

1

In an enumeration, how can you change the initial value of the elements?

The initial value cannot be changed

Create a new enumeration for each different initial value

Specify the desired initial value after the element name (correct)

Use a separate method to set the initial value

What is the default storage type used to hold the values of an enumeration?

System.Int32 Signup and view all the answers

In an enumeration, do the numerical values need to be unique?

No, they can be duplicated for multiple elements Signup and view all the answers

Which of the following best describes the purpose of using an enumeration?

To create a set of symbolic names mapping to known numerical values Signup and view all the answers

What does the ToString() method return for an enumeration variable?

The string name of the current enumeration’s value Signup and view all the answers

Which method is used to obtain the data type used to store the values of an enumerated type?

Enum.GetUnderlyingType() Signup and view all the answers

How do you declare an enum variable in C#?

Color myColor = Blue; Signup and view all the answers

What happens if you forget to scope the enum name when assigning a value to an enum variable?

It will result in a compile error Signup and view all the answers

What is the purpose of changing the underlying type of an enumeration?

To decrease the memory usage of the enumeration variable Signup and view all the answers

What is the result if you set an enum variable to a value not defined directly by the enumerated type?

It issues a compile error Signup and view all the answers

How can you obtain the numerical value of an enumeration variable?

(int)myColor Signup and view all the answers

Which class provides methods to interrogate and transform a given enumeration?

.NET.System.Enum Signup and view all the answers

In which case will forgetting to scope the enum name result in an error?

When assigning a value to an enum variable Signup and view all the answers

What does System.Type represent in .NET?

.NET metadata description Signup and view all the answers