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

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Test your C++ skills with our quiz based on Bruce Eckel's 'Thinking in C++'. Dive into object-oriented programming, advanced topics, and fundamentals. Perfect for learners and experts alike. Assess your knowledge and become a C++ master!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What does the volatile keyword suggest about a variable's value?

It should be optimized for speed.
It may change unexpectedly.
It is immutable.
It is local to the function.

The correct answer is: It may change unexpectedly.

The volatile keyword indicates that a variable's value may change unexpectedly. This means that the value can be modified by multiple threads without a predictable pattern, making it more difficult to ensure data consistency. The other options are incorrect because A) optimization for speed has no correlation to the usage of the volatile keyword, and B) the variable's value can still be changed even in the absence of the volatile keyword, so it is not considered immutable. Additionally, D) local variables are not affected by the use of the volatile keyword, which is typically used for global variables.