Array Data Structure Quiz for Beginners

The size of the array should always be _____

• Whole Number

• Negative

• Positive

• Real Number

With the help of which operator can array elements be accessed?

• Dot Operator .

• Subscript Operator [ ]

• Braces { }

• Parenthesis ( )

Which of the following statements is correct about arrays?

• The size of the array is dynamic.

• Random access is not possible in an array.

• Arrays can only store integers.

• The size of the array is fixed.

Which of the following syntax correctly declares an Array in C/C++?

• geeks{20};

• array geeks[20];

• int geeks[20];

• int geeks;

In an array int arr[3]={1,2,3}, what will happen if we try to access arr[4] in C/C++?

• Run Time error

• 30

• Garbage Value

• Segmentation Fault

What is the output of the following program? C

{

int arr[5] = { 2, 6, 8, 13, 19 };

for (int i = 0; i < 5; i += 2)

arr[i]++;

for (int i = 0; i < 5; i += 1)

printf("%d,",arr[i]);

}

• 3, 6, 9, 13, 20

• 2, 6, 8, 13, 19

• 3, 7, 9, 14, 20

• None of these

What is the famous mathematical example of a 2-D array?

• Cube

• Dice

• Matrix

• Table

Which of the following is not a type of array?

• Four-dimensional

• Two-dimensional

• One-dimensional

• Three-dimensional

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

• 1

• Random Value

• Undefined

• 0

Which of the following operations is not allowed on arrays?

• Accessing elements

• Modifying elements

• Resizing the array

• Iterating through elements