Question 1

A two-dimensional array is also called

A. Single array B. Pointer array C. Matrix D. String

Question 2

What is the last index of an array declared as int a[5];?

A. 5 B. 4 D. 6

Question 3

Array indexing in C++ starts from

A. 1 C. -1 D. Depends on compiler

Question 4

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

A. int arr; B. int arr(10); C. int arr[10]; D. array int arr[10];

Question 5

What is the output of the following code?


int a[3] = {10, 20, 30};
cout << a[1];

A. 10 B. 20 C. 30 D. Garbage value

Question 6

What happens if you access an array index outside its size in C++?

A. Compiler error B. Runtime error always C. Program stops immediately D. Undefined behavior

Question 7

What is an array in C++?

A. A collection of different data types B. A collection of same data type elements stored in contiguous memory C. A function that stores multiple values D. A pointer variable

Question 8

Which loop is most commonly used to access array elements?

A. while loop B. do-while loop C. for loop D. switch loop

Question 9

Which of the following is a correct way to initialize an array?

A. int a = {1,2,3}; B. int a[3] = 1,2,3; C. int a[3] = {1,2,3}; D. int a(3) = {1,2,3};

Question 10

How many elements does the array int x[20]; contain?

A. 19 B. 21 C. 20 D. 0

C++ language