Mastering Arrays in C

What is the correct syntax for declaring an array in C?

• arrayName{arraySize}

• type arrayName[]

• type arrayName[arraySize];

• arrayName[type]

How do you initialize an array with specific values in C?

• int arr = {1, 2, 3};

• int arr[3] = new int[3]{1, 2, 3};

• int arr[] = {1, 2, 3};

• int arr[3] = {1; 2; 3};

What is the default value of an uninitialized array in C?

• All elements contain garbage values.

• Indeterminate values for local arrays; zero for static/global arrays.

• All elements are initialized to zero.

• All elements are initialized to one.

Explain how to access the elements of an array in C.

• Use the syntax arr[index] to access elements, where 'index' is the position of the element.

• Access elements using arr[index + 1].

• Elements can be accessed with arr->index.

• Use the syntax arr{index} to access elements.

What function can be used to sort an array in C?

• orderArray

• sortArray

• qsort

• arraySort

Describe the difference between bubble sort and quicksort.

• Bubble sort uses a divide-and-conquer approach, unlike quicksort.

• Quicksort is a stable sorting algorithm, while bubble sort is not.

• Bubble sort is a simple O(n^2) algorithm, while quicksort is a more efficient O(n log n) divide-and-conquer algorithm.

• Bubble sort is faster than quicksort for large datasets.

How do you declare a two-dimensional array in C?

• int array(rows, columns);

• array[int][int] array;

• int[rows, columns] array;

• int array[rows][columns];

What is the output of printing an array directly in C?

• The size of the array in bytes.

• A random integer value.

• The address of the first element of the array.

• The value of the last element of the array.

How can you find the length of an array in C?

• Count the elements manually in a loop.

• The length of an array in C can be found using 'sizeof(arr) / sizeof(arr[0])'.

• Use 'length(arr)' function to get the size.

• Use 'sizeof(arr)' only without dividing by element size.

What is the purpose of the 'sizeof' operator in relation to arrays?

• To initialize the elements of an array.

• To create a new array of the same size.

• To determine the total memory size of an array.

• To calculate the length of an array.