C++ MCQs with answers Page - 158

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Q. What is the purpose of the 'friend' function in C++?

  • (A) To allow access to private and protected members of a class
  • (B) To create multiple objects of a class
  • (C) To inherit a class
  • (D) To define a global function

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Q. Which operator is used to access a pointer's value in C++?

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

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Q. Which of the following is true about function overloading in C++?

  • (A) Functions must have different names
  • (B) Functions must have different return types
  • (C) Functions must have different parameter lists
  • (D) Functions must be defined in different files

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Q. Which of the following is not a valid access specifier in C++?

  • (A) private
  • (B) protected
  • (C) public
  • (D) global

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Q. Which of the following statements about recursion in C++ is true?

  • (A) A function cannot call itself
  • (B) Recursion always results in an infinite loop
  • (C) Recursive functions must have a base condition
  • (D) Recursion is not allowed in C++

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Q. Which of the following is true about C++ structures?

  • (A) They cannot have member functions
  • (B) They support inheritance
  • (C) They can have both data members and member functions
  • (D) They cannot be used to define objects

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Q. Which of the following operators cannot be overloaded in C++?

  • (A) +
  • (B) =
  • (C) ::
  • (D) []

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Q. Which of the following correctly declares a pointer in C++?

  • (A) int ptr;
  • (B) int *ptr;
  • (C) pointer<int> ptr;
  • (D) int ptr[];

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Q. What is the default return type of the 'main()' function in C++?

  • (A) void
  • (B) int
  • (C) float
  • (D) char

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Q. Which of the following statements is true about C++ classes?

  • (A) A class cannot have private members.
  • (B) A class can have both data members and member functions.
  • (C) A class must always have a constructor.
  • (D) A class cannot be instantiated.

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