Enum declaration syntax in C Sharp (C#) - Step-by-Step Execution

Concept Flow - Enum declaration syntax

Start Enum Declaration

↓

Write 'enum' keyword

↓

Name the Enum

↓

Open curly brace '{'

↓

List enum members

↓

Close curly brace '}'

↓

Enum declared successfully

This flow shows the steps to declare an enum: start with the keyword, name it, list members inside braces, then finish.

Execution Sample

C Sharp (C#)

enum Days {
    Sunday,
    Monday,
    Tuesday
}

Declares an enum named Days with three members: Sunday, Monday, and Tuesday.

Execution Table

Step	Code Part	Action	Result
1	enum Days	Recognize enum keyword and name	Prepare to declare enum named Days
2	{	Open enum body	Start listing members
3	Sunday,	Add member Sunday	Sunday assigned value 0 by default
4	Monday,	Add member Monday	Monday assigned value 1 by default
5	Tuesday	Add member Tuesday	Tuesday assigned value 2 by default
6	}	Close enum body	Enum Days declared with 3 members

💡 All enum members listed and enum declaration closed with '}'

Variable Tracker

Variable	Start	After 1	After 2	After 3	Final
Days.Sunday	undefined	0	0	0	0
Days.Monday	undefined	undefined	1	1	1
Days.Tuesday	undefined	undefined	undefined	2	2

Key Moments - 3 Insights

Why does Sunday get the value 0 automatically?

By default, enum members start at 0 and increase by 1 for each member, as shown in execution_table rows 3 to 5.

What happens if I forget the closing brace '}'?

The enum declaration is incomplete and will cause a syntax error; execution_table row 6 shows the importance of closing the enum.

Can enum members have explicit values?

Yes, but in this example, values are assigned automatically starting at 0, as seen in variable_tracker.

Visual Quiz - 3 Questions

Look at the execution_table, what value is assigned to Monday?

A 0

B 2

C 1

D undefined

💡 Hint

Check execution_table row 4 where Monday is assigned value 1.

At which step does the enum declaration close?

A Step 6

B Step 4

C Step 3

D Step 2

💡 Hint

Look at execution_table row 6 where '}' closes the enum.

If you add a new member after Tuesday, what value will it have by default?

A 2

B 3

C 0

D Undefined

💡 Hint

See variable_tracker: values increment by 1 for each new member.

Concept Snapshot

Enum declaration syntax in C#:
enum EnumName {
  Member1, // default 0
  Member2, // default 1
  Member3  // default 2
}
Members auto-increment starting at 0 unless assigned explicitly.

Full Transcript

This visual execution shows how to declare an enum in C#. First, write the keyword 'enum' followed by the enum name. Then open curly braces and list the members separated by commas. Each member gets an automatic integer value starting at 0 and increasing by 1. Finally, close the braces to complete the declaration. The execution table traces each step, showing how members get assigned values. The variable tracker shows the values of each member after each step. Key moments clarify common confusions like default values and the need for closing braces. The quiz tests understanding of member values and declaration steps.