Module 6 - Questions

Array Multiple Choice Questions

1. What is the index of the first element in a C++ array?

   • [ ] 1

   • [ ] 0

   • [ ] -1

   • [ ] Undefined

2. Which of the following correctly declares an array of integers with size 5?

   • [ ] int myArray[4];

   • [ ] int myArray<5>;

   • [ ] int myArray[5];

   • [ ] int[5] myArray;

3. How do you initialize an array with values at the time of declaration?

   • [ ] int arr[] = (1, 2, 3);

   • [ ] int arr[] = {1, 2, 3};

   • [ ] int arr[3] = 1, 2, 3;

   • [ ] int arr[3] = (1, 2, 3);

4. What happens if you try to access an element outside the bounds of an array?

   • [ ] Compilation error

   • [ ] Runtime error

   • [ ] Undefined behavior

   • [ ] The program will automatically resize the array

5. What is the output of the following code snippet?

   int arr[] = {1, 2, 3}; cout << arr[2];

   • [ ] 1

   • [ ] 2

   • [ ] 3

   • [ ] Error

True or False Questions

1. T/F: Arrays in C++ are dynamic, meaning they can be resized during runtime.

2. T/F: The elements of an array in C++ are stored in contiguous memory locations.

3. T/F: You can declare an array without specifying its size if you initialize it at the time of declaration.

4. T/F: C++ arrays perform bounds checking when accessing elements.

5. T/F: It is possible to have arrays of any data type, including user-defined types.

Vector Multiple Choice Questions

1. Which header file must be included to use vectors in C++?

   • [ ] <array>

   • [ ] <vector>

   • [ ] <list>

   • [ ] <deque>

2. How do you declare an empty vector of integers?

   • [ ] vector<int> vec;

   • [ ] int vector vec;

   • [ ] vector vec<int>;

   • [ ] int vec[];

3. Which member function is used to add an element at the end of a vector?

   • [ ] push()

   • [ ] append()

   • [ ] add()

   • [ ] push_back()

4. Which of the following is NOT a member function of the vector class?

   • [ ] size()

   • [ ] pop_back()

   • [ ] clear()

   • [ ] get()

True or False Questions

1. T/F: Vectors in C++ are dynamic arrays that can grow or shrink at runtime.

2. T/F: Elements in a vector are stored in non-contiguous memory locations.

3. T/F: It is mandatory to specify the size of a vector at the time of its declaration.

4. T/F: You can use array-style indexing to access elements in a vector.

Parallel Array Multiple Choice Questions

1. What is a parallel array?

   • [ ] An array that can be accessed by multiple threads simultaneously.

   • [ ] Multiple arrays where corresponding elements are related.

   • [ ] An array that stores multiple types of data.

   • [ ] An array that is automatically sorted.

2. What is the primary advantage of using parallel arrays?

   • [ ] Dynamic resizing

   • [ ] Type safety

   • [ ] Memory efficiency

   • [ ] Built-in sorting and searching

3. Which operation becomes more complex when using parallel arrays?

   • [ ] Accessing individual elements

   • [ ] Calculating the length of the arrays

   • [ ] Inserting or deleting elements

   • [ ] Declaring the arrays

4. How do you ensure that the data in parallel arrays stays synchronized?

   • [ ] The arrays automatically stay synchronized.

   • [ ] You must manually update all arrays when making changes.

   • [ ] Use a special library for parallel arrays.

   • [ ] Use a built-in C++ feature for parallel arrays.

5. What is the primary disadvantage of using parallel arrays?

   • [ ] They are slow.

   • [ ] They are not supported in modern C++.

   • [ ] They can be error-prone and hard to manage.

   • [ ] They take up too much memory.

True or False Questions

1. T/F: Parallel arrays are a feature built into the C++ language.

2. T/F: In parallel arrays, the element at a given index in each array corresponds to a single logical entity.

3. T/F: Parallel arrays are a good choice when you need to store complex objects with multiple attributes.

4. T/F: Parallel arrays are automatically sorted and searchable.

5. T/F: Parallel arrays are a type of multidimensional array.