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Notice w
hat
ha
pp
ens
af
t
er
the last '"note" is printed; the
pr
og
ram ends and
the
display returns
lo
the pro
mpt
.
Th
is ha
pp
ens because there are
no
oth
er
statements following
the
lasl PAUSE.
To
"Free
ze"
the
di
s
pl
ay
af
t
er
th
e last
no
te is pr
int
ed
, we can
ch
ange line
80
to
:
80
PRINT
"D
O "
K
ey
strokes:
8 i
00
'!..)
[ R
~
D.J
Oil
CD 1
-·
1
~
Ll!J
[QJ
, .,.
,.
I
CJ
(
LHmr
l
Alter
all,
ther
e's no reason why we
c;i
n't
mix
PR
IN
T and PAUSE
st
ate
ments throu9t1out
our
progra
m.
T
ry
this
for
yo
u
rs
elf.
H. INPUT
By
utilizing
the
var
i
ous
forms
of
the
PRINT statement.
alone
or in
co
m
binatio
n. information
can be nicely presented to the
compu
ter
user. M
ost
of the items
wh
i
ch
will
be
printed, however,
are
the
re
sult of processing
so
me in
iti
al
da
ta, This initial data is given to the program
by
that
sa
me compu
ter
use
r.
The
in
struction which
co
ntrols t
his
pr
oc,e
ss
is the
INP
UT instruc
ti
on.
In its simple
st
f
or
m;
IN
PUT vari
ab
le-name,
the
IN
PUT instr
uct
ion merely p
ri
n ts a ? (
qu
estion
m
ar
k) and then
wai
ts for tho user
to
type
in
the
requir
ed
information.
Wha
t
is
"'requil'ed" depends
on
th
e
va
riable
wh
ich appears as part of
the
IN
PU
T instruct
io
n. For exampl
e,
if
the va
ri
able is
numeric,
the
user should
en
ter a number. which w
il
l
b•
stored in
th
e variable.
Do you see a
pro
bl
em
with this form
of
the I
NP
UT statement ? Good. As some
of
yo
u may
realize, unle
ss
th
e user
of
the
program
i$
;,ilio
11>e
programmer (and
pro
bab
ly
n
ot
even then), he
wi
ll
not knov1 vv
ha
t
type
of
data
to
enter when
he
secs the que
st
ion
mar
k. It is up
to
the
programmer
to
k
ee
p the user informed at all times.
35
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