Hello,
I have made this :
(define (string-insert s1 i)
(if(> (string-length s1) 0) (string-append (substring s1 0 i) "-" (substring s1 i (string-length s1)))))
But on the if I get a this message :
if: expected a question and two answers, but found only 2 parts
So I think that the if get sonehow messed up ,
What I try to do is this :
When the lenght of the string is greater then 0 then take the first part of the string then put the - and the last part of the string. As last append the pieces to 1 piece.
Without the if everything works great on non empty strings.
Anyone a idea where I did make the wrong turn.
Roelof
I have made this :
(define (string-insert s1 i)
(if(> (string-length s1) 0) (string-append (substring s1 0 i) "-" (substring s1 i (string-length s1)))))
But on the if I get a this message :
if: expected a question and two answers, but found only 2 parts
So I think that the if get sonehow messed up ,
What I try to do is this :
When the lenght of the string is greater then 0 then take the first part of the string then put the - and the last part of the string. As last append the pieces to 1 piece.
Without the if everything works great on non empty strings.
Anyone a idea where I did make the wrong turn.
Roelof
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