C++ Identifiers|Standard Identifier & User-defined |Tutorial 7| For Beginners |E3 School-2020

 

C++ Identifier :

A C++ identifier is a name used to identity a variable.

Function 

Model 

Class

Or any identify variable.

These unique names are called identifiers.

Rule Identifier:

👉Identifier may a letter (mybook,a,b) , number(1,2,3,4), underscore(_).

For Example :

👉First Character must be Letter or underscore 

👉Blank Space not allowed (This     is)

👉Reversed word can't be used to an identifier 

👉An identifier can be 1 to 31 character 

👉Both upper and lower case

👉👉👉👉👉👉Type Of Identifier👈👈👈👈👈

Two Typ of Identifier

Standard Identifier 

User-define Identifier 

Standard Identifier 

Standard Identifier has a special meaning in c++. Like Cout, Cin is a different function. Users can't change the name because of define in c language. 

User-define Identifier 

User-define Identifier that defines by the user or program like marks, id, age, Name.

User's own choice change user defines identifier.

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