The banks. Inherit tree /std/bank ---+--- /std/room. void set_save_file(string str) Sets the file to which all the banks information is saved. string query_save_file() Returns the file to which all the banks information is saved. int query_percentage() void set_percentage(int i) Sets and querys the percantage of the money deposited you actualy deposit (bank charges). int query_account_cost() void set_account_cost(int i) Sets the cost of opening an account at this bank.