Delete the 4 by pressing (IKIf), then insert a 2 by typing
tIl.
The program will
appear
as:
10
INPUT "NUMBER"; N
.t.~0
CT
-",
CT'
'+
1.
~
:3~!l
i~
I,.)
::::
A
',,/
+ N
20
IF
N = 0
THEN
GOTO
604
SQ)
(,01'0
l(;.i)·~
6(21
PRINT'
"I\'·/ERASE
It3";
AV/Cr
Although the lines are not listed
in
the correct order, they
do
have the correct line
numbers.
Exit from the Editor.
List the program. You will see:
10
INPUT
"NUMBER";
N
20 IF
N=0
THEN
GoTo
60
30
AV
=
AV
+ N
40
CT
=
CT
+ 1
:'50
GO
TO
10
60
PRINT
"AVERAGE
IB";
AV/CT
The program
is
listed
in
the correct order, because BASIC always lists the lines in
your program according to their line numbers.
Here is an example of the execution of the program:
l\,IUMBER7
L~
"JlJM]~,E:R?
::;::
NUI"IBER7 0
AVEH/,(;[
IS
2
Ok
•
The program seems to be working correctly. Execute the program several times to
verify that it will work correctly in every case.
You
will find that the ability
to
move a line in your program
to
a different position by
changing the line number
is
very useful and convenient.
80
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