I think this is equivalent to:

    int i;
    int main(){
        for(
            ;
            i["]<i;++i){--i;}"]; // loop until i == 14? (the NUL byte on the end)
            read('-'-'-',i+++"hello, world!\n",'/'/'/') // read(0, <one byte of "hello, world!\n" at a time>, 1)
        ) {};
    }

    int read(j,i,p){
         write(j/p+p,i---j,i/i); // write(0/1+1, i-- - 0, 1) --> write(1, i, 1) --> write a byte to STDOUT
    }

what does this program do? i compiled it and ran it and got no output. i hope i haven't fork bombed myself or something

Prints "hello, world!", assuming sizeof(int) == sizeof(char*) (and the same alignments and ABI, etc).