Loop Command (For·next) - Radio Shack TRS-80 PC-4 Owner's Manual

"TH EN" or " ;
I f
(semicolon) are used separately depending upon what follows.
5-6-5 Loop Command
• FOR-NEXT statement
A FOR"NEXT statement is used when you want to perform similar operations
repeatedly and the number of repetitions (loops) is known.
Format: FOR variable
= n
TO
m
[STEP
R-,]
T
-I
~
initial final increment
value value
NEXT variable
(Item enclosed in brackets may be omitted.)
(n, m and
Q
are numerical expressions.)
In other words, this is a command to repeatedly execute the command between "FOR"
and "NEXT" while a variable changes from
n
to
m
in increments of
Q.
When execution reaches
m,
it proceeds to the command following "NEXT".
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