Atari 800 Basic Reference Manual

CLR
Figure 8-5 shows an example of building a 6 x 3 matrix.
10 Dit·1 t-1( 6 .. 3 >
20 FOP Pm·l=0 TO 6
30 FOF.~ COL=l TO 3
40 tl : RC!l·J .. COL )=I tH ( ~:t-~D ·:: 0 /~:: 1 00(1 )
50 t·~E~=:T COL = t·~E>=:T ROH
60 FO~: F.:Ol·J=O TO 6
70 FOF.: COL=l TO 3
:30 F'P I rH t-1< F.:Ol·J ·' COL >
90 t·~E:=<T COL : F'P I r·H = t · ~E>=:T F.:O~·l
Figure 8-5. Building A Matrix
Note that the words ROW and COLUMN are not BASIC commands, statement s,
functions, or keyword s. They are simply variable names used here to designate
which loop function is first. The program could just as easily ha ve been written
with X and Y as the variable names.
Format: CLR
Example: 200 CLR
This command clears the memory of all previously dimensioned strings, arrays,
and matrices so the memory and variable names can be used for other purposes.
It also clears the values stored in undimensioned var iable s. If a matrix, string, or
array is needed after a CLR command, it must be redimensioned with a DIM
command.
Ar.,.ays and Matr· ice s 43

Atari 800 Specifications

General

Brand	Atari
Model	800
Category	Desktop
Language	English