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

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Master C++ with our comprehensive quiz based on 'Thinking in C++'. Test your knowledge through flashcards and multiple-choice questions to enhance your understanding of C++. Prepare effectively for your exam!

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Why is operator= limited to being a member function?

  1. To prevent redefining the built-in assignment behavior

  2. Because it only operates on two objects of the same class

  3. To simplify syntax

  4. For performance reasons

The correct answer is: To prevent redefining the built-in assignment behavior

Operator= is limited to being a member function because it allows the developer to define a customized assignment behavior for objects of a particular class. This prevents the built-in assignment behavior from being accidentally changed or redefined, ensuring consistency across different parts of the program and avoiding potential errors. Option B is incorrect because operator= can be overloaded to work on objects of different classes as well. Option C is incorrect because making operator= a non-member function would not simplify syntax, but rather make it more complex. As for option D, while performance can be a consideration for making operator= a member function, it is not the main reason for this limitation.