closeAllOpen.c

void closeAllOpen() {
    int total = OrdersTotal();
    for(int i; i < total; i++) {
        OrderSelect(0, SELECT_BY_POS);
        int ticketNumber = OrderTicket();
        double price = OrderType() == OP_BUY ? Bid : Ask;
        OrderClose(ticketNumber, OrderLots(), price, 3);
    }
}