Question

two types of data classes are​

Answer 1

Answer:

Abstract class.

Concrete class.

More here

Sealed class

Static class

Partial class

Inner class

Hope it helps uh ✌❤☺

Answer 2

Answer:

Classes of data types

Machine data types.

Boolean type.

Enumerations.

Numeric types.

String and text types.

Pointers and references.

Function types.

Meta types.