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C++ Programming - OOPS Concepts

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Exercise :: OOPS Concepts - General Questions

  • OOPS Concepts - General Questions
11. 

Why reference is not same as a pointer?
A. A reference can never be null.
B. A reference once established cannot be changed.
C. Reference doesn't need an explicit dereferencing mechanism.
D. All of the above.

Answer: Option D

Explanation:

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12. 

cout is a/an __________ .
A. operator
B. function
C. object
D. macro

Answer: Option C

Explanation:

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13. 

Which of the following concepts provides facility of using object of one class inside another class?
A. Encapsulation
B. Abstraction
C. Composition
D. Inheritance

Answer: Option C

Explanation:

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14. 

How many types of polymorphisms are supported by C++?
A. 1
B. 2
C. 3
D. 4

Answer: Option B

Explanation:

The two main types of polymorphism are run-time (implemented as inheritance and virtual functions), and compile-time (implemented as templates).
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15. 

Which of the following is an abstract data type?
A. int
B. double
C. string
D. Class

Answer: Option D

Explanation:

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