How many classes are there name them?

Classes are reference types that hold the object created dynamically in a heap . All classes have a base type of System. Object. The default access modifier of a class is Internal.

Explanation: There are two kinds of classes in c++. They are absolute class and the concrete class.

Modern grammars normally recognise four major word classes (verb, noun, adjective, adverb) and five other word classes (determiners, preposition, pronoun, conjunction, interjection), making nine word classes (or parts of speech) in total.