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!

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What happens if you attempt to modify a const variable?

Compiler warning
Compiler error
Runtime error
Undefined behavior

The correct answer is: Compiler error

A A compiler warning will not stop the program from executing, but it is not possible to modify a constant variable, so it would be futile. C: A runtime error would occur if the program attempted to access or modify a memory location that it does not have permission to, which would not be the case with modifying a const variable. D: Undefined behavior could potentially occur if attempting to modify a const variable, as different compilers may handle this differently. However, the most common and expected outcome would be a compiler error. Therefore, the best answer is B: Compiler error, as attempting to modify a const variable is not allowed and will result in a compilation error.