Device Error with a Code and a Message

An exception can carry more than a sentence. Build DeviceError, which inherits from std::runtime_error and also stores an integer code:

- DeviceError(int code, const std::string& message): the what() text is E, then the code, then : , then the message (for example E100: negative id); the code is kept in a private member - int code() const: returns the code

Then write void openDevice(int id): an id below 0 throws DeviceError(100, "negative id"), an id above 9 throws DeviceError(200, "no such device"), and otherwise it prints device , the id and open on one line.

The tests read ids from input, one per line, call openDevice for each, and on an error print failed with code , the code, : and what(). For the first test the input is 3, -1, 12.

Do NOT write a main function.

Expected Output:

device 3 open↵
failed with code 100: E100: negative id↵
failed with code 200: E200: no such device↵

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

Hints4 available

Topics:

Exceptions

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