How to break out of WHILE ?

pollux

When I have a simple while loop, how can I break out of it? (e.g. break in C/C++).

p

pavpav

You break out of while when the conditions on top are not met

pollux

Hi pavpav, 

Thanks I thought so but will hoping RAPID supported a C-ish `break`.  But if that's not possible I'll add it to the while condition.

p.

Henrik Berlin

The closest I can think of is the RETURN statement that will exit the current routine. That might work if you put your WHILE statement in a dedicated routine.

DanLars

Hey Pollux,

You can also use the GOTO statement like this:

MODULE WhileLoop

    VAR num count := 0;

    

    PROC TestWhileloop()

        WHILE TRUE DO

            

            IF count > 5 THEN

                GOTO nextPart;

            ENDIF

            Incr count;

        ENDWHILE

        nextPart:

        TPWrite "Out of while loop";

        Stop;

    ENDPROC

    

ENDMODULE

hope it helps,

Lars

pollux

Ah thanks guys for all the possible solutions!

AlexK

But then this would do the same with less code and without the use of GOTO which I ware thought never to use when I started programming ABB robots.

MODULE WhileLoop

    VAR num count := 0;

    

    PROC TestWhileloop()

        WHILE count <= 5 DO

            Incr count;

        ENDWHILE

        TPWrite "Out of while loop";

        Stop;

    ENDPROC

    

ENDMODULE