Ace Your C++ Skills 2026 – Rock the ‘Thinking in C++’ Challenge!

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How do C++ comments start and end?

// for single-line and /* */ for multi-line

In C++, single-line comments start with // and end at the end of the line. Multi-line comments start with /* and end with */. Option B is incorrect because # is not used for comments in C++, it is used for preprocessor directives. Option C is incorrect because // is used for single-line comments, but multi-line comments require the use of /* and */. Option D is incorrect because -- is not used for comments in C++, it is used for decrementing.

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# for single-line and  for multi-line

// for both single and multi-line

-- for single-line and /* */ for multi-line

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