Mastering Arrays in C Programming

What is the correct syntax to declare an integer array of size 10 in C?

• `int array{10};`

• `int array[10];`

• `array int[10];`

• `int [10]array;`

Which of the following is the correct way to initialize an array in C at the time of declaration?

• `int arr[5] = {1, 2, 3, 4, 5};`

• `int arr[5] := {1, 2, 3, 4, 5};`

• `int arr[5] == {1, 2, 3, 4, 5};`

• `int arr{5} = (1, 2, 3, 4, 5);`

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

• 1

• -1

• 0

• Depends on the array size

Which function is used to allocate memory dynamically for an array in C?

• `alloc()`

• `malloc()`

• `new()`

• `memalloc()`

What is the correct way to declare a 2D array of integers with 3 rows and 4 columns in C?

• `int arr[4][3];`

• `int arr(3)(4);`

• `int arr[3][4];`

• `int arr[3,4];`

What value is stored in uninitialized elements when an array is partially initialized in C? For example: `int arr[5] = {1, 2};`

• Random garbage values

• -1

• 0

• NULL

Consider the following C code snippet: ```c int arr[3][3] = {{1,2,3},{4,5,6},{7,8,9}}; printf("%d", arr[1][2]); ``` What will be the output?

• 5

• 6

• 4

• 8

• `int *arr = malloc(n);`

• `int *arr = malloc(n * sizeof(int));`

• `int arr = malloc(n * sizeof(int));`

• `int *arr = malloc(sizeof(n));`

What is the prerequisite condition for applying binary search on an array in C?

• The array must contain only integers

• The array must be sorted in ascending or descending order

• The array must have an even number of elements

• The array must be dynamically allocated