pkutaj

(define sq (lambda (n) (* n n)))
(assert (= (sq 5) 25)) ;PASS

pkutaj

(define sqs (lambda (x y) (+ (sq x) (sq y))))
(assert (= (sqs 2 3) 13)); PASS

pkutaj

;👇 eval operator
(sqs 2 3)
;👉 (lambda (x y) (+ (sq x) (sq y)))

pkutaj

;👇👇 eval operands
(sqs 2 3)
; 👉 2
; 👉 3

pkutaj

;👇 body of the procedure        ;👇 arguments
;(+ (sq x) (sq y)))              ; 2 3
;applied 👉 (+ (sq 2) (sq 3))

pkutaj

(sqs 2 3)
(+ (sq 2) (sq 3))
(+ (sq 2) (* 3 3))
(+ (sq 2) 9)
(+ (* 2 2) 9)
(+ 4 9)
13

pkutaj

#include <stdio.h>
int x = 42;
int *p = &x;

printf("The value of p is %p and is pointing to %d\n", p, *p);
// The value of p is 0x1080b8000 and is pointing to 42

pkutaj

0x00000001080b8000

pkutaj

#include <stdio.h>
int main() {
  int x = 1;
  int y = 2;
  int checkpoint = 0;

  int *ptr = &x;
  int **ptr_ptr = &ptr;
  checkpoint = **ptr_ptr; 
  printf("%d\n", checkpoint); // 1

pkutaj

Name	Address	Value	Inferred Type / Role
v1	0x04	1	Integer Variable
v2	0x08	2	Integer Variable
checkpoint	0x12	1	Integer / Boolean Flag
ptr	0x20	0x04	Pointer (Points to v1)
ptr_ptr	0x28	0x20	Pointer to Pointer (Points to ptr)