Radio Shack TRS-80 Owner's Manual page 147

DISK
BA
EXAMINE NEXT
CHARACTER
\l
..NO
PUT
IT
INTO
TEMPORARY
SAVE
AREA
EXAMINE NEXT
CHARACTER
^^Tsf
? y
PICKUP THE
TERMINATOR
SET
V
GET DATA
FROM
TEMPORARY
SAVE
AREA
EVALUATE
IT
-V
ASSIGN TO
VARIABLE
"5 END
>
Figure
13.
Input process.
The
following
table
shows
how
various data
images
will
be
read-in
by
the
statement:
INPUT*! >A»B
»C
Ex.#
Image on
disk
Values
assigned
1
123.45
(IWTEffiW
B.ZEi!
70BBMTER)
A =
123.45
B = 82000
C
=
7000
2
3©(IIII1
4
CElTEffiS flEHTEB)
AlZeof
A =
34
B =
5
C
=
3
i
.
»2>3>4
(INTER)
A =
1
B =
C =
2
4
i
»3
»
eof
A=1
B =
3
C
=
eof error
(eof
=
end
of
ile):
In
Example
2 above,
why
does variable
c
get the
value 0?
When
the input
reaches the
end of
hie,
it
terminates
that last
data item,
which
then contains
"a
12."
This
is
evaluated
by
a routine just like the
basic
val
function
—
which
returns
a zero since
the hrst character of
"A12"
is
a
non-numeric.
129