Sharp MZ-700 Basic Manual page 21
Disk basic interpreter
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20
The reason that the space used for each name and each address is of various lengths is
because the data registered by sequential access are not usually of a fixed length; the
length varies according to the data. For the random access files, to be explained later,
all data are stored in boxes of a fixed length of 32 bytes.
If,
as in this example, data are
to be handled as one group, and, as for the addresses above, 32 bytes is not sufficient,
and the lengths are different, then the use of the sequential access file is convenient.
A program can be made as described below, by INPUT command, to substitute names
and addresses alternately in string variables, register each person's file individually,
prepare an ADDRESS LIST of a total of 50 people, and then read out the prepared
file and display on the screen the names and addresses of 10 persons at a time.
Write-in
1 0 0
WO PEN
# 3
"F D 1 : ADD RES S
LIS T" ........
Designation of drive
number and file name
1 1 0
FOR
I =1
TO
5 0
120
INPUT
"name="
;NA$
130
INPUT
"address"
=
;AD$
140
PRI NT
#3,
NA$,
AD$
...........................
Write-intofloppydisk
150
NEXT
I
160
CLOSE
#3
Read-out
200
ROPE N
#4,
"FD1: ADDRESS
LIST"
210
FOR
I =1
TO
5
FOR
J
=1
TO
10
220
INPUT
#4,
NA$,
AD$
230
PRI NT
NA$ :
PRI NT
AD$
240
NEXT
J
250
PRI NT
" PUSH
SPACE KEY"
260
GET
X$
F
X$
"
THEN
280
270
GO
TO
260
280
NEXT
I
290
PRI NT
"END"
300
CLOSE
#4
,
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