Apple IIe - Page 96

96 Apple lie Users Handbook
Integer
DIM
a (i[,b(i) . .. ]
a$ (i[ ,b$(i) ... ]
a and bare the variables to be dimensioned. i and j are integers.
In Integer BASIC, the string variable must be dimensioned with
255 elements or less.
In
Applesoft BASIC, all arrays, strings, and matrices are prede-
fined with subscripts of 10. Above 10, the value in a DIM
statement corresponds to the largest subscript that can be used
in that variable. However , there is always a zero subscript. As a
result, to save 100 values in a single dimension array, the correct
DIM statement would be DIM A(99).
In
Integer BASIC, the value in a DIM statement corresponds to
the largest subscript that can be used with that variable. An
Integer variable with a subscript of 0 is the same as a variable
without the subscript . If TEST(O) = 27, then TEST is also equal to 27
and vice versa. With string variables, there is no 0 subscript.
The maximum size of strings and arrays depends on the amount
of available memory at the time the DIM statement was
executed.
If the DIM statement exceeds the amount of available memory,
the following error will occur:
Applesoft BASIC
Integer BASIC
?OUT OF MEMORY ERROR
IN line
***MEM FULL ERR
STOPPED AT line
where line is the line of the DIM statement.
Example. -- Applesoft
DIM A$(10,5), C%(2,20)
In
the preceding example, 66 string spaces are allocated for A$,
and 63 integer variables are defined for C%.