DIM
This page was last modified 15:35, 8 September 2019 by Mars2000you. Based on work by NYYRIKKI and Gdx and others.

Contents

Effect

Reserves memory for the specified variables and intitializes the array(s).

Note: If if an array is referred to when not first created with a DIM instruction, a maximum index of 10 is assumed.

Syntax

DIM <array name>(<size1>[,<size2>])[,<array name>(<size1>[,<size2>]),...]

Parameters

<array name> is an alphanumeric variable or a string. Several array names can be specified in the DIM instruction, they need to be separated by a comma.

<size1> is a number that specifies the maximum index of the array. The first index is always 0.

<size2> is optional, it is required only for two-dimensional arrays and specifies the maximum index for the second dimension of the array.

Examples

10 DIM M(25)
20 FOR A=0 TO 25:M(A)=3*A:NEXT
30 FOR A=0 TO 25
40 PRINT "3 times ";A;" is ";M(A)
50 NEXT A
10 DIM A$(26)
20 FOR I=0 TO 26
30 A$(I)=CHR$(64+I)
40 NEXT I
50 PRINT A$(22)
 
RUN
V
10 DIM A(20,5)
20 A(20,5)=2
30 PRINT "In row 20, column 5 of array A I stored the value ";A(20,5)
 
RUN
In row 20, column 5 of array A I stored the value 2

Related to

CLEAR, COPY, ERASE

Compatibility

MSX-BASIC 1.0 or higher