Print 8

gistfile1.c

#include <stdio.h>
#include <string.h>
char* f(char *s, int x){return x==81?s:(strcat(s, (x/9%4==0)&&x%9!=8?"*":((((x%9)/8)*8==(x%9))?((x%9)/8==0?"*":"*\n"):" "))&&f(s, ++x))?s:s;}
int main(void) {
    char s[91]={0,};
    printf("%s",f(s, 0));
}