Casio FX-795P - GOSUB {Branch location}; RETURN

154
CHAPTER 7 © Command Reference
mn,
Explanation:
1)
Repeats
process
contained
between
FOR
and
NEXT
statements
a
number
of
times
specified
by
the
control
variable.
The
value
of
this
variable
is
changed,
from
the
initial
to
the
final
one,
by
the
increment
for
each
repetition
of
the
process.
When
the
value
of
the
control
variable
exceeds
the
final
value,
repeti-
tion
is
terminated.
:
2)
When
the
initial
value
is-larger
than
the
final
value,
the
execution
between
FOR
~
NEXT
is
performed
only
once.
3)
When
the
increment
is
positive,
the
value
of
the
control
variable
increases
by
each
increment.
When
the
increment
is
0,
execution
will
be
repeated
end-
lessly.
When
the
increment
is
negative,
the
value
of
the
control
variable
decreases
by
each
increment.
If
increment
is
omitted,
one
will
be
specified.
4)
A
NEXT
statement
must
always
correspond
to
a
FOR
statement
and
must
be
written
after
it.
5)
FOR.~
NEXT
loops
can
have
the
following
nested
structure.
1@ FORI=1 TO 10
20 FOR J=11 TO 2@
30 PRINT U3%373 ]
4@ NEXT J
50 NEXT |
60 END
6) Nesting can be performed with up to 4 levels.
7)
When
a
FOR
~
NEXT
loop
is
terminated,
the
value
of
the
control
variable
exceeds
the
final
value
by
the
value
of
the
increment.
8)
A
branching
out
of
a
FOR
~
NEXT
loop
can
be
performed.
If
branching
inside
a
FOR
~
NEXT
loop
by
an
IF
statement
or
GOTO
statement
is
attempted, an error occurs.
7-2 Program Commands
Branched line No. iG)
Line No.
# program area No.
“Number 0 to 9
GOSUB
Function:
Performs a branching to a specified subroutine.
Parameter:
Line No.: 1 to 9999.
Program area No.: 0 to 9.
Explanation:
1) Performs a branching to a subroutine..A return from this subroutine is per-
formed by executing RETURN. .
2) To make a ‘subroutine inside a subroutine is called nesting which can be
performed with up to 8 levels.
3) Return to the statement next to the GOSUB statement is performed by
RETURN.
4)
Return
to
the
main
routine
cannot
be
performed
by
an
IF
statement
or
GOTO
statement.
Therefore,
be
sure
to
perform
return
by
a
RETURN
state-
ment.
:
5) When the branched line No. does not exist, an error (Error 4) occurs.
*A numeric expression can also be used for a branched line number anda ‘pro-
gram area number.
Example:
10° PRINT “MAIN 106%
2@ GOSUB 100
3@ PRINT “MAIN 30”
48 END
100 PRINT “SUB 100”
11@ GOSUB 200
12@ RETURN
200 PRINT “SUB 200”
210 RETURN
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