What are the 4 Data Types in C#?
C# is a popular programming language that is used to create software applications. It is an object-oriented language that is used to develop applications for the Microsoft .NET framework. It is a powerful language that allows developers to create robust applications quickly and efficiently.

In C#, data types are used to define the type of data that a variable can store. A data type defines the size and range of values that can be stored in a variable. It also defines the operations that can be performed on the data. C# mainly categorizes data types into two types: Value types and Reference types.

In this article, we will discuss the four main data types in C#: Value types, Reference types, Enum types, and Nullable value types.

Value Types
Value types are simple data types that are stored in the stack memory. They include int, float, bool, and char.

Int: Int is an integer data type that stores whole numbers. It can store numbers from -2,147,483,648 to 2,147,483,647.

Float: Float is a floating-point data type that stores real numbers. It can store numbers from -3.4E+38 to 3.4E+38.

Bool: Bool is a Boolean data type that stores true or false values.

Char: Char is a character data type that stores a single character.

Reference Types
Reference types are complex data types that are stored in the heap memory. They include class types, interface types, delegate types, and array types.

Class Types: Class types are user-defined data types that are used to create objects. They contain data and methods that can be used to manipulate the data.

Interface Types: Interface types are user-defined data types that define a set of methods that must be implemented by a class.

Delegate Types: Delegate types are user-defined data types that are used to create delegates. Delegates are used to pass methods as parameters to other methods.

Array Types: Array types are user-defined data types that are used to store a collection of values.

Enum Types
Enum types are user-defined data types that are used to store a set of named constants. They are used to represent a set of related values.

Nullable Value Types
Nullable value types are user-defined data types that are used to store null values. They are used to represent values that may or may not be present.

Conclusion
In this article, we discussed the four main data types in C#: Value types, Reference types, Enum types, and Nullable value types. Value types are simple data types that are stored in the stack memory. Reference types are complex data types that are stored in the heap memory. Enum types are user-defined data types that are used to store a set of named constants. Nullable value types are user-defined data types that are used to store null values. Understanding the different data types in C# is essential for developing robust applications.