PROGRAMMING CHALLENGE

This one should be difficult enough for you guys,

Write a function foo that takes a number n and returns a function that takes a number i, and returns n incremented by i.


My submission, in Scheme


(define (foo num)
  (lambda (x) (+ x num)))

>>35
>>36
>clang does not support nested functions; this is a complex feature which is infrequently used, so it is unlikely to be implemented anytime soon.