There are four main types of data types in C++ language: primitive, array, enumeration, and structure. Primitive data types include integer, character, and floating point types that can represent basic values. Array and pointer data types allow grouping data of the same type. Enumeration data types define a set of named integer constants. Structure data types define a record that consists of one or more variables of different data types grouped together under a single name.

1. A data – type is the representation of data . It specifies
the type of data that a variable can store such as integer ,
floating ,character etc.
Example :-
Int a=10 ;
Float b ;
Char c;
Here a , b and c are variable and int , float and char
are data – type .
EXAMPLE :-

2. Classification of Data - types
our types of data – types in C++ language
TYPES DATA – TYPE
a - type Int , char , float , double etc.
ata - type Array , pointer etc.
ion data - type Enum
ned data - type Structure