The Variable name can be called identifier. It has to follow some rules:
- The name can contain letters, digits and underscore but the first letter has to be a letter or the underscore. Avoid underscore as the first letter because it can be clashed with standard system variables.
- The length of name can be up to 247 characters long.
- Keywords Cannot be used as a Variable name.
- The Variable name should be meaningful to the programming context.
Examples of legal variable names include
x result outfile bestyet
x1 x2 out_file best_yet
power impetus gamma hi_score