Variable Names
Variable Names

Variable Names

To distinguish strings from integers, string variable names must end in a $. Variable names must start with a letter and can include any sequence of letters, digits, and underscores. Function and command names must not be used as a variable name. Variable names are not case sensitive and are converted to uppercase by the interpreter.
A common mistake is to use a command or function name as a variable. To avoid using these reserved words, ZBI-Developer can be a useful resource. Reserved words are highlighted making it easier to spot this occurrence and thus, saving debugging time.

Valid variable names

I, J, K, VARNAME, VARSTR$, MYSTR$,MY_STR9$

Invalid Names

STR$ = Reserved word
ORD = Reserved word
VAL = Reserved word
W# = Invalid character (# )
9THSTR = Variable can not start with a number