Question

It gives me this error for my if structure:
if: expected a question and two answers, but found 4 parts

However i am doing it according to the syntax.

 (if (or (null? list1) (null? list2))
    display(result-list)
    (begin
    (append result-list (list((car list1) list2)))
    (inner ((cdr list1) list2 result-list)))
     )

Could you please tell me where am i doing it wrong?

Answer 1

The second line should be (display result-list).

The way you wrote it, display is the then-part of the if, (result-list) is the else-part and the begin-block is the superfluous fourth part that your compiler/interpreter complains about.