Multiple RETURNS within a single subroutine

I am not sure if this is a programming style question a potential stack overflow issue.

Is it OK to have multiple RETURN statements within a single subroutine? Is there a depth limit? I have tested the multiple return subroutine up to 10 deep with no apparent problems.

/code
SubCheck: 'this is the dummy subroutine
if a = 0 then
b = 1000
return
if a = 1 then
c = 12*a
return
if j = 6 then
d = 255
return
return



'This is the calling code

code, code, code
gosub subcheck
morecode, morecode

/endcode

Cheers
Brian

Perfectly fine.

Hi,

Since any logic validation executes the return it is as good as only one return.

Having multiple return statements like that has no effect on the stack, the return statement only comes into play when it is executed.

However it's a programming style question that comes up now and again and one I contemplate again and again.

When I see horrible code like this:

Code:

---

IF A THEN
  IF  B THEN
    IF C THEN
      IF D THEN
        do something
      END IF
    END IF
  END IF
END IF

---

I want to change it to

Code:

---

IF NOT A THEN
  RETURN

IF NOT B THEN
  RETURN
...
etc

---

because from a debugging and comprehension standpoint I find it easier to be able to get out of the processing chain as soon as possible. I don't want to have to work through all those nested IFs wondering what's going to happen next.

It's easier for me to read, write and test.