7-8
Searching Using a Program
As
long
as
the input data consists
of
only
two
items such
as
names and telephone
numbers, it will
not
be particularly inconvenient
to
search
by
manual operation
using the
~
key
as
described in the previous sections. However,
if
the amount
of
data increases and the input items also increase
to
three, four
or
more, the
length
of
a record will exceed
24
characters.
It
will then become necessary to
move the display with the
~
key or the cursor rrwvement key in order
to
call
the desired data.
This type
of
mass data can be handled easily
if
data
is
searched
by
using a BASIC
program.
We
will introduce a search method with a program using the data mentioned in
the previous section (see page 179). This method can also be applied easily to
data
of
three items or more.
• Outline
of
the Program
If
this program
is
executed, the request "Name?"
is
displayed.
If
we enter the
name
of
the person whose telephone number
is
to
be searched, the telephone
number will be displayed
if
it
is
stored in the DAT A BANK.
If
it
is
not
stored,
"No Data!!" will be displayed.
Since this program
is
for displaying only, specify the
MEMO
IN
mode(§!!~)
to
enter the naines or telephone number
s.
• Program List
10
DIM
Z$C5l
20
RESTORE:j:j:
30
BEEP
INPUT
"Name"
, $
40
IF
$=""
THEN
30
'
50
FOR
J=1
TO
5
60
Z$CJ)=
MID$CJ*7-6,7l
70
NEXT
J
80
F=0
90
RESTORE:j:j:
Z$C
1
l+Z$C2l+Z$C3l+Z$C4l
+Z$C5l,1,140
195
To Next Page
Loading...
Need help?
General
