C++ MCQs with answers Page - 128

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Q. Which of the following access specifies is used in a class definition by default?

  • (A) Protected
  • (B) Public
  • (C) Private
  • (D) Friend

A

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Q. Which of the following statement is correct with respect to the use of friend keyword inside a class?

  • (A) A private data member can be declared as a friend.
  • (B) A class may be declared as a friend.
  • (C) An object may be declared as a friend.
  • (D) We can use friend keyword as a class name.

A

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Q. Which of the following keywords is used to control access to a class member?

  • (A) Default
  • (B) Break
  • (C) Protected
  • (D) Asm

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Q. Which of the following type of data member can be shared by all instances of its class?

  • (A) Public
  • (B) Inherited
  • (C) Static
  • (D) Friend

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Q. Constructor is executed when _____.

  • (A) an object is created
  • (B) an object is used
  • (C) a class is declared
  • (D) an object goes out of scope.

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Q. Which of the following also known as an instance of a class?

  • (A) Friend Functions
  • (B) Object
  • (C) Member Functions
  • (D) Member Variables

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Q. How many objects can be created from an abstract class?

  • (A) Zero
  • (B) One
  • (C) Two
  • (D) As many as we want

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Q. Which of the following statements is correct?

  • (A) Data items in a class must be private.
  • (B) Both data and functions can be either private or public.
  • (C) Member functions of a class must be private.
  • (D) Constructor of a class cannot be private.

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Q. Which of the following can be overloaded?

  • (A) Object
  • (B) Functions
  • (C) Operators
  • (D) Both B and C

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Q. Which of the following is the only technical difference between structures and classes in C++?

  • (A) Member function and data are by default protected in structures but private in classes.
  • (B) Member function and data are by default private in structures but public in classes.
  • (C) Member function and data are by default public in structures but private in classes.
  • (D) Member function and data are by default public in structures but protected in classes.

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