"Kenneth" <kdw### [at] gmailcom> wrote:

> #switch(0)
> #case(strcmp(IMG_TYPE,AA))

This should work, as strcmp(IMG_TYPE,AA) _IS_ 0.


> #switch(0)
> #case(strcmp(IMG_TYPE,AA)=0)
>
> I ask because the latter doesn't work--no error message of any kind is created,
> but it falls through to the #else clause, even though strcmp(IMG_TYPE,AA) is a
> 'match' between IMG_TYPE and AA.

Which means that it evaluates to TRUE, or 1, which is NOT 0.

Stop thinking in terms of conditional Boolean word results, and think in 0 or 1.

#if (strcmp(IMG_TYPE,AA)=0)
would give a Boolean result of 1.


I think you're stuck thinking about #switch() and #case() as some sort of
semi-Boolean operator, when it's more of a "pick this value from the following
list" function.  Maybe if you think about the whole block like an array [n] and
the #case statements are picking a specific array item (sort of).

{pseudocode}
#if (Case = n)
      #local Return = Array [n]
#end

and

#if (Range > Low & Range < High)
      #local Return = Array [some appropriate n]
#end

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