Doing this rather silly school project for which we were requested to
use subroutines (with little guidance).

I'm using the command:

"GoSub ControlBrk"

I now need to program the ControlBrk part of my program and I was
thinking that would go something like this....

Sub ControlBrk    <--- what's the Syntax for this????
        code
        code
        code
Return
(which will return control to the statement following my GoSub
command)

Well I keep getting compiler errors and the darn thing won't run. I
think it's because my Syntax is wrong for the programming of the
actual subroutine. Any ideas????

Thanks,
Danny

PS - Though this program is being done in VB, right now we're only
doing hard coding without the visual aspect. VB without the V ;)

You didn't mention which flavor of BASIC you use, but if you have a compiler
I'll guess it's QuickBasic or something later.

In QB, there are two kinds of subroutines: the old GOSUB..RETURN type and the
newer SUB..END SUG type.

The old syntax is:

GOSUB label
{execution will continue from here after return}
...
...
END ' of main program

label:
 {subroutine body}
RETURN

Note that you _don't use the keyword SUB.  All variables in a GOSUB subroutine
are global; the subroutine can see and alter any variable in the main program
or in another GOSUB - style subroutine.  This is the original subroutine,
updated only to the extent of allowing a descriptive label instead of a line
number.

The newer type of subroutine is defined with

SUB name [parameter list]
  subroutine body
END SUB

You call this kind of subroutine just by mentioning its name and (if it takes
paramaters) parameter list.  Variables declared inside a SUB are invisible to
the rest of the program, unless declared SHARED.

For example, if you want to use a SUB to
sound the beeper a variable number of times, you could use:

SUB Beeper (Count%)
  FOR I% = 1 TO Count%
          BEEP
  NEXT
END SUB

and the call

Beeper N%

anywhere in the program will produce N beeps.

QB keeps each SUB in its own editing window, so when you start editing the sub
the main program disappears.  The F2 key brings up a the list of subs (and the
main program) so you can select the next one to edit.  If you save the program
after adding a SUB, QB will automatically insert a DECLARE SUB line at the top
of the source file.  This alerts the compiler to the presence of the sub; it
looks like this:

DECLARE SUB Beeper (Count%)

Details are in the online help.

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