thanks again guys! i might not drop this course at all... i was about to :( i've been stuck for 2.5 days
worksCode:rooms[num_rooms-1].description = "test element before last";
printf(rooms[num_rooms-1].description);
printf("%\n");
rooms[num_rooms].description = "test element last";
printf(rooms[num_rooms].description);
printf("%\n");
rooms[0].description = "test element 1";
printf(rooms[0].description);
printf("%\n");