hollow hourglass


#include 
int main() {
    int i, j, n = 5;
    for(i = 1; i <= 2*n-1; i++) {
        for(j = 1; j <= 2*n-1; j++) {
            // Top & bottom border
            if(i == 1 || i == 2*n-1)
                printf("*");
            // Hollow X shape
            else if(j == i || j == (2*n - i))
                printf("*");
            else
                printf(" ");
        }
        printf("\n");
    }
}


*********
 *     *
  *   *
   * *
    *
   * *
  *   *
 *     *
*********