What is Identifiers and Keywords in C++.

What is Identifier in C++.

Identifier are use in every computer languages.Identifiers are important feature on a language.
Identifier are the names to represent variable or function.A good identifier name should be short.

   In C++ identifier consists of 31 characters,if an identifier is longer than 31 characters first 31 character will be use and remaining will be ignored by Compiler.
There are two types of identifier:

• Standard Identifiers.
• User-Defined Identifiers.

An identifier that has special meaning in C++ is known as Standard Identifier.
An identifier that is define by the Programmer is Known as User-define identifier.

What is Keyword in C++.

A word that has a predefined meaning and purpose in C++ language is called Keyword.

The meaning and purpose of keyword is defined by developer of language,it can not be changed by user.

In C++ the total number of keywords are 63.

List of all Keywords used in C++

                           asm                 char               delete

                           explicit             class              const

                          do                   double            export

                          extern               friend              new

                          goto                   if                  mutable

                         namespace       public              register

                         reinterpret_cast                      sizeof

                         static_cast                               this

                         throw                true               typename

                         union              unsigned            volatile     

                         wchar_t           while              const_cast 

                         continue          default             dynamic_cast

                         else                   enum                false

                         float                   for                   inline

                          int                     long                operator

                         private            protected            return 

                         short                 signed               struct

                         switch              template               try

                         typedef             typeid                using 

                          virtual                void