Answer all questions with original answers. No copying from the internet. All answers must be more than 2 sentences.

Describe three approaches to exception handling in languages that do not provide direct support for it.

Summarize the arguments in favor of the termination and resumption models of continuation.

If Scheme were a pure functional language, could it include DISPLAY? Why or why not?

What does the following Scheme function do?

(define (y s lis)

(cond

((null? lis) '() )

((equal? s (car lis)) lis)

(else (y s (cdr lis)))

))