QP-ARY

What is an array?

• A collection of variables of different data types
• A single variable that holds one value
• An array is a collection of similar data items
• A variable that can hold only one value

How are elements in an array accessed?

• Using a unique identifier for each element
• Using an index number
• By randomly picking an element
• Using a different variable for each element

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

• 1
• 0
• Depends on the array size
• Undefined

If an array is declared as int arr[5], what is the maximum index?

• 5
• 4
• 6
• None

What is the purpose of the size in array declaration (int arr[10])?

• To initialize all elements
• To specify the maximum index
• To determine the data type
• To set the last element

Which of the following correctly declares an array of 10 integers?

• int arr;
• int arr[10];
• array int arr[10];
• int arr{10};

What is stored in an array?

• Pointers to data
• Elements of different data types
• Elements of the same data type
• Both pointers and data

What happens if you access an array out of its bounds?

• Returns zero
• Accesses the last element
• Causes undefined behavior
• Gives an error

What is the advantage of using arrays?

• Store elements of different types
• Simplifies access to related data
• Dynamic size
• Reduced memory usage

Which function can be used to calculate the size of an array in C?

• sizeof()
• length()
• size()
• arraySize()