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enum definition

Context: Define an enum using the enum keyword. By default, the first member has value 0, and each subsequent member increments by 1.

Syntax

[access modifier] enum EnumName
{
    Member1,
    Member2,
    Member3
}

Example

public enum DaysOfWeek
{
    Sunday,    // 0
    Monday,    // 1
    Tuesday,   // 2
    Wednesday, // 3
    Thursday,  // 4
    Friday,    // 5
    Saturday   // 6
}

Real-world usage example

Order status: Define OrderStatus enum with Pending, Processing, Shipped, Delivered, Cancelled to make code self‑documenting.

Example: In e‑commerce applications, enums are often used for state machines. The State pattern can be combined with enums.