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Which of the following are essential features of an object-oriented programming language?
  1. Abstraction and encapsulation
  2. Strictly-typedness
  3. Type-safe property coupled with sub-type rule
  4. Polymorphism in the presence of inheritance
  • a)
    1 and 2
  • b)
    1 and 4
  • c)
    1, 2 and 4
  • d)
    1, 3 and 4
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Which of the following are essential features of an object-oriented pr...
Abstraction, Encapsulation, Polymorphism and Inheritance are the essential features of a OOP Language.
Abstraction is used to hide the inner details of the data in the programming languages.
Abstract classes can be created using a programming language supporting OOPS.
Encapsulation is used to bind the data and functions together in the form of bundles.
Polymorphism is used to implement the functions having same signature but different functions.
Inheritance is implemented in the programs to inherit the properties of one class to the another class or objects. The concept of polymorphism is used in inheritance to reuse the functions or methods.
Hence, option 2 is correct.
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Which of the following are essential features of an object-oriented programming language? Abstraction and encapsulation Strictly-typedness Type-safe property coupled with sub-type rule Polymorphism in the presence of inheritancea)1 and 2b)1 and 4c)1, 2 and 4d)1, 3 and 4Correct answer is option 'B'. Can you explain this answer?
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