Variable and Types With Example

  • Variables:-
  • Variable refers to a storage area whose contents can vary during processing. All the variables are created in the memory of the computer. The data store can change during the execution of the programs.
    • The variables name have the following properties:-
    • i) Any variables name may be up to 40 character long
    • ii) Can’t contain characters other than letter, number and types of declaration character ($, %, #, & and ?)
    • iii) Variable name must began with a letter (A-Z a-z (i.e. lowercase or uppercase letter).)
    • iv) Can’t be reserved word like INPUT,
    • v) Variable name represent either numeric values or strings.
    • vi) Can’t began with “FN” unless it is a function call.
    • Types of Variable
    • a) Numeric Variable
    • b) String Variable

  • a) Numeric variable:-
  • Numeric Variables can be any single letter of alphabetic followed by one of the numerals. 
    Example:- 
    A=12 
    pi=3.14 
    c=79.89
  • b) String Variable:-
  • String Variables had the string of character or alpha numeric its value. It must began with an alphabets and with dollar ($) sign. Mathematical calculation can’t be performed using string variables. Some of valid string variables are:-
    Sarita $
    Pritam$
    Sarmila$
    TL$
    A$
    B$

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