Radio Shack TRS-80 model III Owner's Manual page 130

**fe^j-;'
EXAMINE NEXT
CHARACTER
T
\/
NO
PUT
IT
INTO
TEMPORARY
SAVE
AREA
-s.
EXAMINE NEXT
CHARACTER
y/lS
I
^
S
PICKUP THE
TERMINATOR
SET
GET
DATA FROM
TEMPORARY
SAVE
AREA
EVALUATE
IT
ASStGN TO
VARIABLE
Figure
13.
Input
process.
The
following table
shows
how
various data
images
will
be
read-in
by
the
statement:
INPUT*! tAtBtC
Ex.#
Image on
disk
123,45
(ENTERS
8,2E4
70B8
[ENTER)
3©(HT|H)
4 fENTER) 5 (ENTER)
AlZeof
1
,,2,3*4
CENTER)
i
,3
t
eof
Values
assigned
A-
123.45
B = 82000
C
=
7000
A =
34
B =
5
C
=
A=1
B =
C =
2
A=1
B
=
3
C
=
eof error
(eof
=
end
of
file):
In
Example 2 above,
why
does variable
c
get the
value
0?
When
the input
reaches the
end of
file,
it
terminates that
last
data item,
which
then contains
4t
Ai2."
This
is
evaluated
by
a routine
just like the
basic
val
function
—
which
returns a
zero since the
first
character of
"a 12"
is
a
non-numeric.
129