C Programming - Array MCQs

An array is:

• A collection of different data types

• A collection of variables of same data type

• A dynamic list

• A structure

The index of the first element of an array in C is:

• 1

• -1

• 0

• Depends on compiler

The correct way to declare an array of 10 integers is:

• int arr(10);

• int arr[10];

• array int arr[10];

• int arr[] = 10;

What is the output of: int arr[5] = {1,2,3}; printf("%d", arr[4]);

• 3

• 4

• 0

• Garbage value

What will sizeof(arr) return for: int arr[5];

• 5

• 10

• 20

• Depends on values

Which of these initializes all elements to 0?

• int arr[5] = {0};

• int arr[5];

• int arr[5] = {1};

• int arr[] = {1,2};

What does arr[2] access in: int arr[3] = {1, 2, 3};

• 1

• 2

• 3

• Compilation error

An array is stored in:

• Random memory locations

• Non-contiguous memory

• Contiguous memory

• File system

To access the last element of array arr[10], use:

• arr[10]

• arr[9]

• arr[0]

• arr[11]

The data type of elements in array char arr[10] is:

• int

• char

• float

• string