#lang racket

(let {[n 3]}
  (+ 3
     (let {[k 7]}
       (* k 2))
     n))


(let {[n 3]}
  (+ 3
     (let {[k 7]}
       (* k
          (let {[j 99]}
            (/ j 3))
          2))
     n))



#| Compare to java -- a very common pitfall for beginners:

class Stuff {
   int[] nums;

   Stuff() {
       int[] nums = new nums[365];
       for (int i=0;  i<nums.length;  ++i) {
            nums[i] = 0;
            }
       }


    // Consider also variations of:
    Stuff( int[] _nums ) { nums = _nums; }

   }


// same example, but easier to notice w/o the array obscuring what's happening, perhaps?:
class Stuff {
   int myField;

   Stuff() {
       int myField = 17;
       }

   }


|#