C++ MCQs with answers Page - 64

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. What happens when a pointer is deleted twice?

  • (A) It can cause a trap
  • (B) It can cause an error
  • (C) It can cause a failure
  • (D) It can abort the program

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Q. Which of the following language feature is not an access specifier in C++?

  • (A) internal
  • (B) C protected
  • (C) private
  • (D) public

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Q. Expression C=i++ causes

  • (A) Value of i assigned to C and then i incremented by 1
  • (B) to be incremented by 1 and then value of i assigned to C
  • (C) Value of i assigned to C
  • (D) i to be incremented by 1

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Q. The statement i++; is equivalent to

  • (A) i = i + i;
  • (B) i = i + 1;
  • (C) i = i – 1;
  • (D) i –;

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Q. In C language, a hexadecimal number is represented by writing

  • (A) h
  • (B) ox
  • (C) xo
  • (D) x

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Q. Which of the following library function below by default aborts the program?

  • (A) exit()
  • (B) Abort()
  • (C) end()
  • (D) Terminate()

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Q. If a member needs to have unique value for all the objects of that same class, declare the member as

  • (A) Dynamic variable inside class
  • (B) Static variable inside class
  • (C) Local variable inside constructor
  • (D) Global variable outside class

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Q. Value of ix+j, if i,j are integer type and ix long type would be

  • (A) double percision
  • (B) long integer
  • (C) float
  • (D) integer

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Q. Which of the following below can perform conversions between pointers to related classes?

  • (A) cast_static
  • (B) dynamic_cast
  • (C) static_cast
  • (D) cast_dynamic

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Q. How do we define a constructor?

  • (A) x~() {}
  • (B) X() {}~
  • (C) X() ~{}
  • (D) ~X() {}

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