C++ MCQs with answers Page - 53

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

1. All operators can be overloaded in C++.
2. We can change the basic meaning of an operator in C++.

  • (A) Only I is true.
  • (B) Only II is true.
  • (C) Both I and II are false.
  • (D) Both I and II are true.

A

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Q. What happens if the base and derived class contains definition of a function with same prototype?

  • (A) Base class object will call base class function and derived class object will call derived class function.
  • (B) Only derived class function will get called irrespective of object.
  • (C) Only base class function will get called irrespective of object.
  • (D) Compiler reports an error on compilation.

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Q. Which of the following are available only in the class hierarchy chain?

  • (A) Member functions
  • (B) Protected data members
  • (C) Private data members
  • (D) Public data members

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Q. Which of the following is the correct class of the object cout?

  • (A) ifstream
  • (B) ostream
  • (C) istream
  • (D) iostream

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Q. Which of the following cannot be used with the keyword virtual?

  • (A) destructor
  • (B) constructor
  • (C) member functions
  • (D) class

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Q. Which of the following functions are performed by a constructor?

  • (A) Initialize objects
  • (B) Construct a new function
  • (C) Construct a new object
  • (D) Construct a new class

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Q. Which of the following problem causes an exception?

  • (A) A run-time error.
  • (B) A syntax error.
  • (C) A problem in calling function.
  • (D) Missing semicolon in statement in main().

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Q. Which one of the following options is correct about the statement given below? The compiler checks the type of reference in the object and not the type of object.

  • (A) Encapsulation
  • (B) Abstraction
  • (C) Polymorphism
  • (D) Inheritance

A

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Q. Which of the following is the correct way of declaring a function as constant?

  • (A) const int ShowData(void) { /* statements */ }
  • (B) int const ShowData(void) { /* statements */ }
  • (C) int ShowData(void) const { /* statements */ }
  • (D) Both A and B

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Q. Which of the following concepts is used to implement late binding?

  • (A) Static function
  • (B) Const function
  • (C) Operator function
  • (D) Virtual function

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