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Lisp Scheme Write a procedure in Lisp Scheme called charflip that takes a string as a...

Lisp Scheme

Write a procedure in Lisp Scheme called charflip that takes a string as a parameter and returns a copy of this string, flipping the case of every character in an odd position (index 1, 3, 5, etc..).

I suggest that you do this recursively. This means cons, car and cdr will come in handy, as will these functions:

• char-upper-case? • char-downcase
• char-upcase
• list->string
• string->list

Here’s this function in action.

scheme@(guile-user)> (charflip "hatburg")
$16 = "hAtBuRg"
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