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Abstraction

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Question 1

Which of the following best describes abstraction?


  • Hiding implementation details and showing only relevant information to the users.

  • Binding both data members and member functions into a single unit.

  • Accessing data members and member functions of one class by other

  • All of the above

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Question 2

What would be the output of the following code snippet?

C 
#include<iostream>
Using namespace std;

class implementAbstraction{
private:
   int a,b;
   void set(int x,int y)
   {
        a=x;
        b=y;
    }
    void display()
    {
       cout<<”a=”<<a<<endl;
       cout<<”b=”<<b<<endl;
    }
  };
  int main()
  { 
    implementAbstraction obj;
    obj.set(10,20);
    obj.display();
    return 0;
   }


  • a = 10, b = 20

  • a = 20, b = 10

  • Compilation Error

  • Runtime Error

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Question 3

Which of the following best supports abstraction in C++?

  • Pointers

  • Access specifiers and pure virtual functions

  • Constructors

  • Inheritance

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Question 4

Which access specifier is commonly used to hide data in abstraction?

  • Public

  • Private

  • Protected

  • Any of these

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Question 5

What is the major difference in abstraction and encapsulation?

  • Abstraction hides implementation encapsulation binds data and function together.

  • Abstraction uses private members and encapsulation uses public members.

  • Encapsulation hides logic and abstraction binds data.

  • There is no difference

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There are 5 questions to complete.

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