Owner`s manual
92
5.1.9 Branch Statements
GOTO
GOSUB -
RETURN
IF
- THEN
IF
-
GOTO
IF
- GOSUB
ON-
GOTO
ON-
GOSUB
100 GOTO 200
100 GOSUB 700
800
RETURN
Jumps to statement number
200
(=
movement
of
program
execution).
Branches
to
statement number
700
subroutine (calling
of
subroutine). Ends subroutine execution by
RETURN
statement, and returns to statement following GOSUB
command in the
main
program.
10
IF
A>20
THEN Jumps to statement number
200
if variable A
is
larger
200 than
20.
Executes next statement if A is
20
or
less.
50
IF
B<3
THEN
B Substitutes B + 3 for variable B if variable B is less than
=B+3
100
IF
A>=B
GO
TO 10
3.
Executes next statement if B is 3
or
greater.
Jumps to statement number
10
if variable A is equal to
or
greater than variable B. Executes next statement if A is
less than B.
30
IF
A=B
* 2
GO
Branches
to
statement number
90
subroutine if value
of
SUB 90 variable A is equal to twice the value of B.
If
not,
executes next statement.
(If
there is a multi-statement following a conditional
statement, the
ON
statement is executed when the
condition is not reached, but the
IF
statement moves the
execution to the next statement number if the condition
is
not reached,
and
the multi-statement is ignored.)
50
ON
A GOTO 70, Jumps
to
statement number
70
if variable A is 1, to
80. 90 statement number
80
if it is 2, and to statement number
90
if it is 3. The next statement is executed if A
is
0
or
4
or
more. The INT function is included in
ON,
so jumps
to
statement number
80
if A is 2.7, in the same way as
2.
90
ON
A GOSUB
700. 800
Branches to statement number
700
subroutine if variable
A
is
1, and to statement number 800 if it is 2. The next
statement is executed if A is 0
or
3
or
more.