Program
8,
PRINTOVER
1.
Have the program type over the existing display
rather than blanking the screen. Do this
without
scrolling.
Is
the display completely satisfactory this way? If no!. how
would
vou im-
prove it?
Program
9,
PRINTOVER Il. The task
is
the same
as
Program
4,
but
fix its fau Its.
Have the character
print
position show visually, even when printing over the
same character. Blank the last
two
lines before
printing
the messages, pausing a
few seconds after printing PHEW!; then blank the
two
lines again before printing
the next display character.
Program
10,
ALL THE
WAY.
Have the display character print over the entire
1000 character positions of the screen. The HIT A
KEY
message
will
appear only
once at the beginning of the program.
After
that
the user enters another key
"blind."
No PHEW! message.
Hint: First do the program for
1=1
TO
999. Getting the 1
OOOth
character
will
take a little poking around.
Program
11,
BOTTOM UP. Have the program print
in
reverse order, starting
from the lower right-hand corner and proceeding left across rows to the home
position. This
is
not
difficult
once vou have done Programs 9 and
10.
Clear the
screen before ENDing to avoid typing into a cluttered display.
109
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