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C++ Intermediate · exercise 05

Error handling strategies

Return an optional instead of throwing for an expected parsing failure.

C++ Intermediate lesson 05

Guided steps

  1. 1.Return std::optional<double> from parseSpeed: empty when the text is not a number.
  2. 2.Catch the conversion failure inside the function; the caller should not need a try block.
  3. 3.Print the value when present and an error line when not.

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