ADS Quiz 2

How is an array of integers initialized in C++?

• int arr[5] = {1, 2, 3, 4, 5};

• int arr[] = {1, 2, 3, 4, 5};

• int arr = {1, 2, 3, 4, 5};

• int arr[5] = 1, 2, 3, 4, 5;

Which of the following is true for the initialization of a C++ array?

• Arrays must always be initialized explicitly in C++

• Arrays are automatically initialized with zero values in C++

• C++ allows both explicit and default initialization for arrays

• Arrays cannot be initialized in C++

What does the term "contiguous memory" mean in the context of arrays?

• Each element of an array is stored in a different location in memory

• The elements of the array are stored in consecutive memory locations

• Arrays in C++ don't use memory

• Memory in arrays is randomly allocated

Which of the following is a valid way to declare a dynamically allocated array in C++?

• int arr[5];

• int* arr = new int[5];

• int arr = new int[5];

• int arr(5);

What is the correct way to deallocate memory used by a dynamically allocated array in C++?

• delete arr;

• delete[] arr;

• free(arr);

• dealloc(arr);

Which of the following is the correct syntax to define a two-dimensional array in C++?

• int arr[3][4];

• int arr[4, 3];

• int arr(3)(4);

• int[3][4] arr;

What is the default initialization value for elements of an array in C++ when no value is provided?

• Zero

• Garbage value

• Null

• Undefined

Which of the following is a valid way to access the 3rd element of an array arr in C++?

• arr[3]

• arr(3)

• arr{3}

• arr.3

What is the size of the array int arr[5] in C++?

• 4

• 5

• 6

• 0

In C++, if you create an array dynamically using new, what will happen to the allocated memory when the program ends if it is not deallocated?

• It will be automatically freed

• It will result in a memory leak

• It will be converted to a static array

• The array will be reallocated