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223
Syntax:
GOSUB label
Description:
GOSUB
calls a subroutine specified by
label
.
• Within the subroutine itself, you use a
RETURN
statement which indicates the log-
ical end of the subroutine and returns control to the statement just after the
GOSUB
that called the subroutine.
• You may call a subroutine any number of times as long as the Interpreter allows
the nest level and other conditions.
• Subroutines can appear anywhere in a source program. However, you should
separate subroutines from the main program by any means such as by placing
subroutines immediately following the
END
or
GOTO
statement, in order to pre-
vent the main part of the program from falling into those subroutines.
• A subroutine can call other subroutines. You can nest
GOSUB
statements to a
maximum of 10 levels.
• When using the
GOSUB
statement together with block-structured statements
(
DEF
FN
...
END
DEF
,
FOR
...
NEXT
,
FUNCTION
...
END
FUNCTION
,
IF
...
THEN
...
ELSE
...
END
IF
,
SELECT
...
CASE
...
END
SELECT
,
SUB
...
END
SUB
, and
WHILE
...
WEND
), you can nest them to a maximum of 30 levels.
Syntax errors:
Flow control statement
GOSUB
Branches to a subroutine.
Error code and message
Meaning
error 71: Syntax error
•
label
has not been defined.
•
label
is missing.
Содержание BHT-BASIC 100 SERIES
Страница 1: ......
Страница 161: ...153 Chapter 10 Sleep Function CONTENTS 10 1 Sleep Function 154...
Страница 163: ...155 Chapter 11 Resume Function CONTENTS 11 1 Resume Function 156...
Страница 173: ...165 Chapter 13 Backlight Function CONTENTS 13 1 Backlight Function 166...
Страница 192: ...Chapter 14 Statement Reference 184 Example OPEN master Dat AS 1 FIELD 1 20 AS bar 10 AS ky CLFILE 1 CLOSE 1...
Страница 249: ...241 Example CLOSE IF kyIn Y THEN KILL Master Dat END IF Reference Statements CLFILE...
Страница 349: ...341 Run time errors Error code Meaning 05h Parameter out of the range checktype is out of the range...
Страница 383: ...375 Run time errors Reference Error code Meaning 05h Parameter out of the range Functions LEFT LEN and RIGHT...