One Catch for a Whole Family of Shop Errors

Because what() is virtual, a single catch (const std::exception&) can report every member of an exception family with the right text. Build the family and the function:

- ShopError inherits from std::runtime_error; its explicit constructor takes a const std::string& message and passes it on - PaymentError, StockError and ShippingError inherit from ShopError; each constructor takes a const std::string& detail and passes payment: , stock: or shipping: joined with the detail up to ShopError - void placeOrder(int step): step 1 throws PaymentError("card declined"), step 2 throws StockError("item sold out"), step 3 throws ShippingError("no courier available"), and any other step prints order placed

The tests read steps from input, one per line, and use only catch (const std::exception& e), printing order failed: and what() or the placed line. For the first test the input is 0, 1, 2, 3.

Do NOT write a main function.

Expected Output:

order placed↵
order failed: payment: card declined↵
order failed: stock: item sold out↵
order failed: shipping: no courier available↵

= newline. The output ends with a newline — print one after the last line.

Hints4 available

Topics:

Exceptions

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