C++ MCQs with answers Page - 21

Here, you will find a collection of MCQ questions on C++. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. If we have object from ofstream class, then default mode of opening the file is _____ .

  • (A) ios::in|ios::trunc
  • (B) _out_ios__trunk
  • (C) ios::out
  • (D) ios::in

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Q. _______________ is a member function that is declared within a base class and redefined by derived class.

  • (A) const member function
  • (B) friend function
  • (C) virtual function
  • (D) static function

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Q. Syntax for Pure Virtual Function is ______________ .

  • (A) virtual void show()=0
  • (B) virtual void show()==0
  • (C) void virtual show()==0
  • (D) void virtual show()=0

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Q. Logical expressions produce ____________ type results.

  • (A) garbage
  • (B) bool
  • (C) static
  • (D) explicit

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Q. We can initialize a value of static variable of a class only when its object is created. No other initialization is permitted.

  • (A) True
  • (B) Flase
  • (C) Either A or B
  • (D) None of the above

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Q. When a base class is privately inherited by the derived class, then_____________ .

  • (A) public members of the base class become private members of derived class
  • (B) protected members of the base class become private members of derived class
  • (C) only b
  • (D) both a and b

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Q. What is the difference between protected and private access specifiers in inheritance?

  • (A) Both are inheritable but private is accessible in the derived class.
  • (B) private member is not inheritable and not accessible in derived class.
  • (C) protected member is inheritable and also accessible in derived class.
  • (D) Both are inheritable but protected is not accessible in the derived class.

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Q. In nested try blocks, if both inner and outer catch handlers are not able to handle the exception, then ______________ .

  • (A) Program will be executed without any interrupt.
  • (B) Program will be terminated abnormally.
  • (C) Compiler issues compile time errors about it.
  • (D) Compiler executes only executable statements of main().

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Q. Throwing an unhandled exception causes standard library function then _________ to be invoked.

  • (A) terminate()
  • (B) stop()
  • (C) aborted()
  • (D) Abandon()

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Q. In which type do the enumerators are stored by the compiler?

  • (A) integer
  • (B) float
  • (C) string
  • (D) All of these

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