trigraph sequences

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

int main (int argc, char **argv){

    int arr??(??)=??<1,2,4,8??>;

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

    printf(" ??= ??( ??/' ??) ??' ??< ??! ??> ??-\n");

    return 0;
}

/*
output:

4
 # [ ' ] ^ { | } ~


*/