create two fucntions

void displayOrderStatus(Connection* conn, int orderId, int customerId);

This function calls the customer_order stored procedure to confirm the entered order ID belongs to the customer. If the value of the second parameter of the customer_order procedure is a non-zero value, the order ID belongs to the customer.

If the value of the second parameter of the customer_order procedure is zero, display the following message:

"Order ID is not valid."

If the order ID is valid, call the display_order_statusprocedure to receive the order status stored in the second parameter of this stored procedure. If the order status is null, display the following message:

"Order does not exist."

If the status is not null, display a proper message.

See the sample message:

"Order is shipped."

void cancelOrder(Connection* conn, int orderId, int customerId);

This function calls the cancel_orderstored procedure to confirm the entered order ID belongs to the customer. If the value of the second parameter of the customer_order procedure is a non-zero value, the order ID belongs to the customer.

If the value of the second parameter of the customer_order procedure is zero, display the following message:

"Order ID is not valid."

0: The order does not exit.

1: The order has been already canceled.

2: The order is shipped and cannot be canceled.

3: The order is canceled successfully.