Enough thinking there on company
time!
Enter
these
lines:
95
FOR
A
=
1 TO 6
120 M
=
M
-
L
130
M
=
M
*
10
140
NEXT
A
... and RUN.
Voila! (I never
did
figure
out what that
meant,
but I think it's positive.)
The "printout"
reads:
X
Y
Z
L
L
L
L
L
L
3.14159
3
. 141589
1
4
1
5
8
9
It's all
there.
Every digit, including the "squirrely"
ones from the land of
little
numbers, is
there.
Analyzing
the
program additions
(after
doing
a LIST)
:
Line 95 began a
FOR-NEXT loop with
6 passes, one for
each
of
the 6 digits right
of
the
decimal.
Line
120
creates
a new decimal value
of
M (just a temporary storage location)
by strip-
ping off
the integer
part.
(Plugging
in the values, M
=
1.41589
—
1
=
.41589)
Line
130
does the
same as line
90
did, multiplies the new decimal times
10
so as to make
the
left-hand
digit an integer and
vulnerable
to
being
snatched
away by the INT func-
tion. {M
=
.41589
*
10
=
4.1589)
Line
140
moves the
control back to
line
95 for another pass through
the clipping
program
. . .
and the
rest
is
history.
Is this too
hard
to follow?
No
—
it isn't
hard
to follow,
and you could go through and
indicate every
value
just like I
did and it would
be perfectly
clear
(to coin a phrase).
Let's instead
learn a way to let the
Computer help
us
understand
what it
is doing.
73
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