C++ MCQs with answers Page - 26

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Q. When a child class inherits traits from more than one parent class, this type of inheritance is called _______________ inheritance.

  • (A) Hybrid
  • (B) Multiple
  • (C) Multilevel
  • (D) Hierarchical

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Q. In case of inheritance where both base and derived class are having constructor and destructor, then which if the following are true ?

1. Constructors are executed in their order of derivation
2. Constructors are executed in reverse order of derivation
3. Destructors are executed in their order of derivation
4. Destructors are executed in reverse order of derivation

  • (A) Only 2 ,4
  • (B) Only 1 , 4
  • (C) Only 2, 3
  • (D) Only 1 , 3

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Q. __________________ is the OOP feature and mechanism that binds together code and the data it manipulates, and keep both safe from outside world

  • (A) Data Binding
  • (B) Data Storing
  • (C) Data Abstraction
  • (D) Data Encapsulation

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Q. Which of the followings is/are not keyword/s in CPP?

1. asm
2. boolean
3. mutable
4. export
5. constant_cast

  • (A) Only 2 and 5
  • (B) Only 1,2 and 5
  • (C) Only 5
  • (D) Only 1 and 4

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Q. Which of the followings are true about Virtual functions?

  • (A) They cannot be friends
  • (B) Constructor Functions cannot be virtual
  • (C) They must be non-static member function of the class
  • (D) All of these

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Q. Which of the following are member dereferencing operators in CPP?

1. *
2. ::
3. ->*
4. ::*
5. ->

  • (A) Only 3 and 4
  • (B) Only 1, 3, 4
  • (C) Only 1 and 5
  • (D) Only 3,4,5

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Q. In Multipath inheritance, in order to remove duplicate set of records in child class, we ___________ .

  • (A) Make base class as virtual base class
  • (B) Write virtual functions is base class
  • (C) Write Virtual function in parent classes
  • (D) All of these

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Q. If base class has constructor with arguments, then it is ________________ for the derived class to have constructor and pass the arguments to base class constructor.

  • (A) Error
  • (B) Compiler dependent
  • (C) Mandatory
  • (D) Optional

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Q. Using friend operator function, following perfect set of operators may not be overloaded.

  • (A) <<, = = , [ ] , >>
  • (B) ?, = , ( ) , ++
  • (C) = , ( ) , [ ] , ->
  • (D) None of these

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Q. An operator function is created using _____________ keyword.

  • (A) iterator
  • (B) operator
  • (C) allocator
  • (D) constructor

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