Variables
Information stored in a variable can alter in the course of the program. The type used in the definition explains the kind of information the symbol can store. Variables are addressable.
Rules for naming the variables:
- Can have characters, digits and underscore.
- Can start with character or underscore.
- Are case sensitive i.e., fan is different from Fan and FAN.
- Can't use keywords
- No limits on the length of the word.