Understanding 1D Arrays in C

What is the correct syntax to declare a 1D array in C?

• int[10] arr;

• int arr[10];

• array int arr[10];

• int arr(10);

How do you initialize a 1D array with specific values in C?

• int arr[5] = new int[5]{1, 2, 3, 4, 5};

• int arr(5) = {1, 2, 3, 4, 5};

• int arr[] = {1, 2, 3, 4, 5};

• int arr = {1, 2, 3, 4, 5};

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

• -1

• 1

• 5

• 0

How can you access the third element of an array named 'arr'?

• arr[1]

• arr[2]

• arr[3]

• arr.get(2)

What function can be used to determine the length of an array in C?

• count(array)

• length(array)

• array.length()

• sizeof(array) / sizeof(array[0])

How do you iterate through all elements of a 1D array using a for loop?

• for (int i = 0; i < array.length; i += 2) { /* process array[i] */ }

• for (int i = 0; i < array.length - 1; i++) { /* process array[i] */ }

• for (int i = 1; i <= array.length; i++) { /* process array[i] */ }

• for (int i = 0; i < array.length; i++) { /* process array[i] */ }

What will happen if you try to access an array element with an index out of bounds?

• The program will run without any issues.

• The array will automatically resize to accommodate the index.

• The value at the last index will be returned.

• An error or exception will occur.

How can you initialize an array with zeros in C?

• int array[size] = {0};

• int array[size] = {1};

• int array[size] = new int[size];

• int array[size] = malloc(size * sizeof(int));

What is the difference between declaring an array and initializing it?

• Initializing an array is defining its type and name.

• Declaring an array is defining its type and name; initializing it is allocating memory and assigning values.

• Declaring an array involves assigning values only.

• Declaring an array and initializing it are the same process.

How do you print all elements of a 1D array in C?

• for(int i = 0; i < size; i++) { printf("%d\n", array[i]); }

• for(int i = 0; i < size; i++) { printf(array[i]); }

• while(i < size) { printf("%d\n", array[i++]); }

• for(int i = 0; i <= size; i++) { printf("%d", array[i]); }