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.

When passing an argument to a C++ function, what is the preferred method for efficiency?

Pass by value
Pass by constant reference
Pass by pointer
Pass as a global variable

The correct answer is: Pass by constant reference

Passing by value means that a copy of the argument is made and then passed to the function, which can be time-consuming and inefficient for larger data types. Passing by pointer means that the memory address of the argument is passed, which can lead to issues with memory management and is generally not preferred in modern C++. Passing as a global variable means that the argument can be accessed from anywhere in the code, making it difficult to track and debug. Passing by constant reference allows the function to access the original argument without creating a copy while also ensuring that the argument cannot be accidentally modified in the function. This makes it the preferred method for efficiency in C++ function arguments.