C++ MCQs with answers Page - 153

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Q. What does the 'void' keyword in C++ represent?

  • (A) A function that does not return any value
  • (B) A variable with no value
  • (C) A data type used for memory management
  • (D) A constant value

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Q. Which of the following will correctly initialize a dynamic array of integers with 10 elements?

  • (A) int* arr = new int[10];
  • (B) int arr[10] = new[];
  • (C) int* arr = malloc(10 * sizeof(int));
  • (D) int arr[10] = new int[10];

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Q. What is the output of the following C++ code?

int a = 7;
cout << a >> 1;

  • (A) 14
  • (B) 3
  • (C) 7
  • (D) 1

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Q. Which of the following is the correct syntax to declare a static variable in C++?

  • (A) int static a;
  • (B) static int a;
  • (C) static a int;
  • (D) int a static;

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Q. What is the purpose of the 'this' pointer in C++?

  • (A) It points to the current object of a class.
  • (B) It is used to access global variables.
  • (C) It is used to define static functions.
  • (D) It is used for memory allocation.

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Q. Which of the following is true about destructors in C++?

  • (A) A destructor is called when an object is created.
  • (B) A destructor has the same name as the class with a '~' prefix.
  • (C) A destructor can be overloaded.
  • (D) A destructor returns a value.

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Q. Which of the following is not a valid C++ keyword?

  • (A) try
  • (B) throw
  • (C) catch
  • (D) handle

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Q. What is the result of the following expression in C++: '5 / 2'?

  • (A) 2.5
  • (B) 2
  • (C) 3
  • (D) Error

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Q. Which of the following can be used to define a function in C++?

  • (A) function keyword
  • (B) fn keyword
  • (C) def keyword
  • (D) None of the above

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Q. Which of the following C++ keywords is used to declare a constant?

  • (A) constant
  • (B) const
  • (C) final
  • (D) immutable

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