Vector Basic Interpreter Basic 80, Reference Manual, Page: 17 / 190

Variables may represent either a numeric value or a .string.
String variable names are written with a dollar sign
($)
as
the last character. For example: A$. nSALES REPORT". The
dollar sign is a variable type declaration character, that
is, it ndeclares· that the variable will represent a string.
In the Extended and Disk versions, numeric variable names
may declare inteqer, single or double precision values.
(All numeric values in SX are single precision.) The type
declaration characters for these variable names are as
follows:
, Integer variable
1 Single precision variable
t
Double precision variable
The default type for a numeric variable name is single
precision.
Examples of BASIC-SO variable names follow.
In Extended and Disk versions:
PIt
MINIMUM 1
LIMIT'
declares a double precision value
declares a single precision value
declares an integer value
In SX, Extended and Disk versions:
N$ declares a string value
ABC represents a single precision value
In the Extended and Disk versions of BASIC-SO, there is a
second method by which variable types may be declared. The
BASIC-SO statements DEFINT, DEFSTR, DEFSNG and OEFDSL may be
inclcded
in a program to declare the types for certain
variable names. These statements are described in detail in
Section 2.12.
1.6.2 Array Variables
An array is a group or table of values referenced by the
same variable name. Each element in an array is referenced
by an array variable that is subscripted with integers or
integer expressions. An array variable name has as many
subscripts as there are dimensions in the array. For
example V(10) would reference a value in a one-dimensional
array, T(1,4) would reference a value in a two-dimensional
array, and so on.