Dafination of Datatype :

A datatype defines the type of data a variable will store in memory. we will discuss all datatype in C++ language.

we will use data type for declaring variables. and if you want to check the datatype size then you can use sizeOf() function in C++.

Syntax :

datatype_name variable_name =  value;

datatype_name : name of datatype

variable_name: name of a variable.

value: the value of a variable that you want to assign.

Example :

int xyz = 0;

there are Three types of datatype in C++.

1. Pre-define datatype (in-Built)
2. User-define datatype
3. Derived datatype

1) Pre-define Datatype

predefine datatype is an in-Built datatype. They specify the size of variables in C++.  There are many pre-defined datatypes in c++.

Also Read This :- static member function in c++ .

User Define Datatype

A data type that is defined by the user it is called user define datatype in C++. Users can create a datatype using the below datatype.

Derived Datatype

Derived datatype is a collection of pre-defined data types. The array is the most useful derived datatype in C++.