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C++ Programming :: OOPS Concepts

OOPS Concepts - General Questions

  1. In which of the following a virtual call is resolved at the time of compilation?

    2. A.
    From inside the destructor.
    B.
    From inside the constructor.
    C.
    From inside the main().
    D.
    Both A and B.

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  2. Which of the following statements regarding inline functions is correct?

    3. A.
    It speeds up execution.
    B.
    It slows down execution.
    C.
    It increases the code size.
    D.
    Both A and C.

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  3. Which one of the following is the correct way to declare a pure virtual function?

    4. A.
    virtual void Display(void){0};
    B.
    virtual void Display = 0;
    C.
    virtual void Display(void) = 0;
    D.
    void Display(void) = 0;

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  4. Which of the following keyword is used to overload an operator?

    5. A.
    overload
    B.
    operator
    C.
    friend
    D.
    override

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  5. What will happen if a class is not having any name?

    6. A.
    It cannot have a destructor.
    B.
    It cannot have a constructor.
    C.
    It is not allowed.
    D.
    Both A and B.

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  6. Which inheritance type is used in the class given below?
    class A : public X, public Y
    {}

    7. A.
    Multilevel inheritance
    B.
    Multiple inheritance
    C.
    Hybrid inheritance
    D.
    Hierarchical Inheritance

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  7. Which one of the following is correct about the statements given below?

    1. All function calls are resolved at compile-time in Procedure Oriented Programming.
    2. All function calls are resolved at compile-time in OOPS.

    8. A.
    Only II is correct.
    B.
    Both I and II are correct.
    C.
    Only I is correct.
    D.
    Both I and II are incorrect.

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  8. Which of the following is an invalid visibility label while inheriting a class?

    9. A.
    public
    B.
    private
    C.
    protected
    D.
    friend

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  9. Which one of the following options is correct?

    10. A.
    Friend function can access public data members of the class.
    B.
    Friend function can access protected data members of the class.
    C.
    Friend function can access private data members of the class.
    D.
    All of the above.

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  10. Which of the following statements is correct in C++?

    11. A.
    Classes cannot have data as protected members.
    B.
    Structures can have functions as members.
    C.
    Class members are public by default.
    D.
    Structure members are private by default.

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