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