Dereferencing in C

main.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char* argv[]) {
    int arr[] = { 5, 13, 22 };
    printf("%d\n", arr[0]);
    printf("%d\n", arr[1]);
    printf("%d\n", 1[arr]);
    printf("%d\n", *arr);
    
    int a = 16;
    int *p = &a;
    *p = 17; // NOT: p = 17
    printf("%d\n", *p);
    
    return 0;
}