Laser 128 - Array Variables

INTRODUCTION
Integer variables are denoted by a
percentage sign " %" immediately following
the variab le names. This type of variab le can
only contain integer values, for exa mple:
1% = 1234
String va riab les must always end w ith a
dollar sign "$". This declares to the BASIC
interpreter that it is dealing wit h string
variables, and it will allocate extra memory
to ha ndle it. For example:
SENTENCE$
VARIAB LE!"
"MY FIRST STRING
SENTENCE$ is a valid string variable, but
SENTE NCE - without the $ sign at the end -
is not.
1.5 ARRAY VARIABLES
An ar r ay is a matri x or table of va lue s that
is referenced by the same variable name . The
specific values are accessed by subscripts
which ar e used in conjunction wit h the
array's name.
The number of s ub sc ript s for an array is the
same as the number of dimensions for it, and
are defined in the DIM statement. Fo r
inst ance:
DIM ARRAY ( IO, IO , 10) sets up a thr ee-
dim en sio nal array where th e .s ub scr ipt for
each dimen sion ranges from 0 to IO . Thus it
is equ i valent to a table containing I I x I I x
II or I33I entries.
II-5