C++ MCQs with answers Page - 159

Here, you will find a collection of MCQ questions on C++. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Which of the following operators is used for object dereferencing in C++?

  • (A) *
  • (B) &
  • (C) ->
  • (D) ::

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Q. Which of the following is used to handle exceptions in C++?

  • (A) try and catch
  • (B) error handling functions
  • (C) exception class
  • (D) None of the above

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Q. Which C++ feature allows a function to be redefined in a derived class?

  • (A) Function Overloading
  • (B) Function Overriding
  • (C) Encapsulation
  • (D) Polymorphism

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Q. Which of the following is not a valid C++ identifier?

  • (A) _variable
  • (B) 123variable
  • (C) variable_123
  • (D) VariableName

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Q. Which keyword is used to define a constant variable in C++?

  • (A) constant
  • (B) define
  • (C) const
  • (D) static

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Q. Which of the following is a correct declaration of a C++ array?

  • (A) array<int> a;
  • (B) int a[10];
  • (C) int a;
  • (D) arr int[10];

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Q. Which function is used to read a full line of text in C++?

  • (A) cin
  • (B) getline()
  • (C) read()
  • (D) extract()

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Q. Which of the following is true about multiple inheritance in C++?

  • (A) A derived class can inherit from more than one base class.
  • (B) It is not allowed in C++.
  • (C) A base class can inherit from a derived class.
  • (D) It is the same as single inheritance.

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Q. Which of the following is used to allocate memory dynamically in C++?

  • (A) malloc
  • (B) new
  • (C) allocate
  • (D) None of the above

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Q. Which of the following is not a valid loop statement in C++?

  • (A) for
  • (B) while
  • (C) repeat-until
  • (D) do-while

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