Enumeration (or enum) is a user defined data type in C. It is mainly used to assign names to integral constants, the names make a program easy to read and maintain. Take a step-up from those "Hello World" programs.

Why are enumerators used?

Enumerations offer an easy way to work with sets of related constants. An enumeration, or Enum , is a symbolic name for a set of values. Enumerations are treated as data types, and you can use them to create sets of constants for use with variables and properties.

Why do we use enumerators in C#?

In C#, an enum (or enumeration type) is used to assign constant names to a group of numeric integer values. It makes constant values more readable, for example, WeekDays. ... An enum is defined using the enum keyword, directly inside a namespace, class, or structure.