Which preprocessor directive is used to include a header file in C++?

Options

  • A. #include
  • B. #define
  • C. #ifdef
  • D. More than one of the above
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

A. #include

Detailed Explanation

Correct Answer: Option A — #include

Explanation: The #include directive tells the preprocessor to include the contents of a specified header file.