if (board->slots[i].has_card) {
for (j = 0; j < NUM_ATTRIBUTES; j++)
*s++ = '0' + board->slots[i].card.attributes[j];
*s++ = ' ';
if (board->slots[i].has_card) {
for (j = 0; j < NUM_ATTRIBUTES; j++)
*s++ = '0' + board->slots[i].card.attributes[j];
*s++ = ' ';