//-std=c99 -Wall -Wextra -Wpedantic -Wshadow

#include <stdio.h>
#include <stdlib.h>
 
 
int main()
{
    char arr[10] = {'a','b','c','d','e','f','g','h','i','j'};

    char *p = &arr[10];


    printf("%c\n",p[-1]);

    printf("%c\n",(-1)[p]);

   
    printf("%c\n",(-1)[&arr[10]]);

    printf("%c\n",(-1)[arr+10]);


    printf("%c\n",*(&2[arr]));

    printf("%c\n",*(arr+2));

    printf("%c\n",2[arr]);

    printf("%c\n",arr[2]);


    return 0;
}
 
/*
output:

j
j
j
j
c
c
c
c

*/