hi,

"Kima" <nomail@nomail> wrote:
> I have trouble to use #ifdef and #ifndef for multiple conditions. Can you
> provide the correct syntax for the following cases:
>
> 1. #ifdef(a1) ...
>    #else #ifdef(a2) ....
>    #else ...
>
> 2. #ifdef(a1) & (a1=1) ...
>
> 3. #ifdef(a1) & #ifdef(a2) ...

1. #if (defined(a1))
   #elseif (defined(a2))
   #else
   #end

2. #if (a1 & 1 = a1)

3. #if (a1 & a2)


regards, jr.

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