Constant With Example

  • Constant
  • Constants are data items that never change their value during a program execution. Their are two types of constant.A constant is something a universal value like value of pi, value of g, value of G, value of e in science.
    • Types of Constant
    • a) Numeric Constant
    • b) String Constant

  • a) Numeric Constant:-
  • Numeric constants are positive or negative numbers on which mathematical operations such as addition, subtraction, multiplication and division can be formed. Some of the valid numeric constants are 150, -908, +23and 192. 
    Example:- 
    CONST pi=22/7
    CONST g=9.8 
  • a) String Constant:-
  • String constants is a set of alpha numeric or special character enclosed within double quotes (“”). Blank spaces can also be used in a string. Some of the valid string constant are “Pritam” and “Dangol”. 
    Example:-
    CONST N$="Ramesh"
    CONST place$="Kirtipur 7, Kathmandu" 


    Note:
    Keyword is a reserved word which has fixed meaning .
    Example:-
    CONST for declaring constant
    PRINT for displaying value in console screen

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