Mastering C++: A Comprehensive Quiz Based on 'Thinking in C++'

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Prepare for the ultimate C++ challenge with our comprehensive quiz based on 'Thinking in C++'. Test your knowledge with engaging questions and receive instant feedback. Perfect for both beginners and experienced C++ programmers looking to sharpen their skills!

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What modification is suggested to make the code general?

Using pointers instead of references
Templatizing it on the type it holds
Incorporating polymorphism
Optimizing for speed

The correct answer is: Templatizing it on the type it holds

To generalize code means to make it applicable to a broader range of data types or situations. Using pointers instead of references (A) would not make the code more general as it still only works with specific data types. Incorporating polymorphism (C) could potentially make the code more general, but it may not be necessary for all situations and could add unnecessary complexity. Optimizing for speed (D) is not related to generalization at all and would not be suggested for this purpose. Templatizing on the type it holds (B) is the best option as it allows the code to be used with different data types without needing to write separate functions or classes for each type. This makes the code more flexible and reusable, thus making it more general.