Constants can be integers, reals, characters, or strings which are fixed values that do not change during program execution, while variables are used to store and manipulate changing data values. Different data types determine how data is stored and operated on in a program. This chapter introduces the basic concepts of constants, variables, and data types which are fundamental elements in any programming language.

1. Constants, Variables and
Data Type
Chapter 2

2. Introduction:
 Data.
 Information.
 Program.
 Language Syntax.

7. Constant Types:
 Integer
 Real
 Character
 String

26. Thank You!