백준 알고리즘 2447번 별찍기 - 10

#include <stdio.h>
 
char array[3*3*3*3*3*3*3*3][3*3*3*3*3*3*3*3] = {0,};
 
int main(void) {
    int num,x=0,y=0;
    scanf("%d",&num);
    star(num,x,y);
    int i,j;
    for(i=0;i<num;i++) {
        for(j=0;j<num;j++) {
            if(array[i][j]==0) printf(" ");
            else printf("%c",array[i][j]);
        }
        printf("\n");
    }
    return 0;
}
 
int star(int num,int x,int y) {
    if(num/3==1) {
        array[x][y+1] = '*';
        array[x][y+2] = '*';
        array[x+1][y] = '*';
        array[x+2][y] = '*';
        array[x+2][y+1] = '*';
        array[x+1][y+2] = '*';
        array[x+2][y+2] = '*';
        array[x][y] = '*';
    }
    else {
        num/=3;
        star(num,x,y);
        star(num,x+num,y);
        star(num,x+2*num,y);
        star(num,x,y+num);
        star(num,x,y+2*num);
        star(num,x+2*num,y+num);
        star(num,x+num,y+2*num);
        star(num,x+2*num,y+2*num);
    }
}