Basics

Question 1

What is an enum (Enumeration) ?

Answer 1

An enum is a set of correlated values.

Question 2

What are enums used to?

Answer 2

To give a name or a key to each one of a set of values. This improves the readability of the code.

Question 3

Is this syntax correct?

enum ExampleEnum
{
A, B, C
};

Answer 3

Yes, this syntax declares a new enum with three possible values ( A, B and C )

Question 4

Is this code valid? Why / Why not?

enum ExampleEnum
{
A, B, C
};

ExampleEnum value = 5;

Answer 4

This code is not valid, since variables declared with an enum as a type can only contain one of the enum’s values.

Question 5

Can you specify the type of an enum?

Answer 5

Yes, you can modify the type as long as it’s an int value (an enum can have the type “unsigned char” but can’t be of type “float”)

Question 6

How can you specify the type of an enum?

Answer 6

Adding “: “ to the declaration.