Variables in C-Language

Data:- Raw facts or figure which is meaningless is called Data.

Ex- a, 6, $, e, etc. 

Definition

• It is a name of storage space which is used to store Data.
• It's value is Changable.
• It always declared Data-type.
• It always contain last value stored in it.

Rules for making Variables in C-Language:-

• The first Character must be an alphabet or underscore ( _ ).
• No commas or blanks are allowed.
• No special Symbols other than underscore is allowed.
• Variables names are case sensitive.

Syntax:-

       Data_type  variable_name  =  value(Data);

Examples:-

              int    a= 10;

             int   x2y= 2;

             int  x#12= 3;

Note:-

 i). In C-Programming no any variable will start with numbers. 

ii). No any keywords can use as variable name in C-Programming.