•
•
•
200
FOR
num
= 0
TO
9
210
PRINT
'FLat'
I
num
I
fLat$(floor,num)
220
END
FOR
num
230
END
FOR
fLoor
240
DATA
"AII,"B","C",IID","E",IIF","G","H","I","JII
250
DATA
"K","L","M","N","O","P","QII,"R","S",IlTII
260
DATA
"U",
"V",
"W",
"X'I,
"yII,
liZ",
II@","£","$",'I%"
The output starts:
FLoor
number
0
FLat
0 A
FLat
1 B
FLat
2 C
and continues giving the thirty occupants.
You
may find this section hard
to
read though
It
IS
essentially the same concept
as
strlng-
slicing.
You
will probably need string-slicing
if
you get beyond the learning stage of
programming. The need for array-slicing
is
much rarer and
you
may wish
to
omit this
section particularly
on
a
first
reading.
We
now use the golfers'
flats
to
illustrate the concept of array
sliCing.
The
flats
will
be
numbered
0
to
9
to
keep
to
single digits and names
will
be single characters
for
space
reasons.
2,0
2,1
2,2
2,2
3,4 2,5 2,6
2,7
2,8 2,9
flat$0~G0[2]0[!]00~
1,0
1,1
1,2
1,3
1,4
1,5
1,6 1,7 1,8 1,9
flat$0~00G0000[2]
Given the above values the
follOWing
are array slices:
fLat$(1,3)
Means a single array element with value N
f
Lat$
(1,1
TO
6)
Means six elements with values L M N 0 P Q
Array Element Value
fLat$(1,1J
L
fLat$(1,2)
M
fLat$(1,3)
N
flat$(1,4)
0
flat$(1,5)
P
flat$(1,6)
Q
ARRAY
SLICING
,
Arrays
flat$(1J
Means flat$
(1,0
TO
9)
ten elements with values K L M N 0 P Q R S T
In
these examples a range
of
values of a SUbscript can be given instead of a single
value.
If
a subscript
is
missing completely the complete range
is
assumed.
In
the third
example the second subscript
is
missing and
it
is
assumed
by
the
system
to
be a
TO
9.
The techniques of array
sliCing
and string
sliCing
are similar though
the
latter
is
more
widely applicable.
1?l84
77
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