Concept of Data Types

Data can be of many types e.g. characters, integers, real, string etc. Anything enclosed in quotes represents characters data types in C++. Numbers without fraction represents integer’s data. Numbers with fractions represent real data and anything enclosed in double quotes represents a string. Since the data to be dealt with are of many types, a programming language must provide ways and facilitate to handle all types of data.

Definition of Data Type Data Types are means to identify the type of data and associated operation of handling it.

C++ like any other language provides ways and facilitates to handle different types of data by providing data types.

C++ data types are of two types:

Fundamental Types

There are five fundamental data types in C++: Char, int, float, double and void that represent characters, integer, floating-point, double floating point and valueless data representation.

Derived Types

Derived Types construct from the fundamental Types are: Array, functions, pointers, references, constant, classes, structures, unions and enumerations.