Question 1

What is an array in C++?

Accepted Answer

A fixed-size sequential collection of elements of the same type

Answer

A collection of functions

Answer

A data structure that stores values in a non-sequential manner

Answer

A single variable that can store multiple values of different types

Question 2

How are elements in an array accessed?

Accepted Answer

By their index within square brackets

Answer

By their position within parentheses

Answer

Using a special keyword

Answer

By using the dot operator

Question 3

Which of the following correctly declares a 10-element array of doubles named balance?

Accepted Answer

double balance[10];

Answer

double[10] balance;

Answer

array<double, 10> balance;

Answer

double balance = new double[10];

Question 4

How can you initialize an array during its declaration?

Accepted Answer

int array[5] = {1, 2, 3, 4, 5};

Answer

int array[5] = 1, 2, 3, 4, 5;

Answer

int array[5] 1, 2, 3, 4, 5

Answer

int array {1, 2, 3, 4, 5};

Question 5

What happens if you omit the size of the array during initialization?

Accepted Answer

The array size is determined by the number of initial values

Answer

The array will not be created

Answer

The array size defaults to 10

Answer

An error occurs during compilation

Question 6

Which statement correctly accesses the fifth element of the array balance in the course packet example?

Accepted Answer

balance[4];

Answer

balance[5];

Answer

balance(4);

Answer

balance(5);

Question 7

What does the following code do? double balance[5] = {1000.0, 2.0, 3.4, 17.0, 50.0}; balance[4] = 50.0;

Accepted Answer

Assigns 50.0 to the fifth element, which is already 50.0

Answer

Reinitializes the fourth element to 50.0

Answer

Assigns 50.0 to the sixth element

Answer

Initializes the fifth element to 50.0

Question 8

What function is used to format output in the given example?

Accepted Answer

setw()

Answer

printf()

Answer

format()

Answer

setprecision()

Question 9

Which of the following is true about multidimensional arrays in C++?

Accepted Answer

The simplest form of a multidimensional array is a two-dimensional array

Answer

The simplest form of a multidimensional array is a three-dimensional array

Answer

C++ does not support multidimensional arrays

Answer

Multidimensional arrays must have the same number of elements in each dimension

Question 10

How can you generate a pointer to the first element of an array?

Accepted Answer

By specifying the array name without any index

Answer

By specifying the array name with the first index

Answer

By using the * operator

Answer

By using the & operator

Question 11

How can you pass an array to a function?

Accepted Answer

By passing the array's name without an index

Answer

By using the * operator

Answer

By using the & operator

Answer

By passing each element of the array individually

Question 12

Can a C++ function return an array?

Accepted Answer

Yes, C++ allows a function to return an array

Answer

Yes, but only single-dimensional arrays

Answer

Yes, but the array size must be specified

Answer

No, C++ functions cannot return arrays

Question 13

What is the purpose of the setw function in the provided code example?

Accepted Answer

To set the width of the output field

Answer

To set the precision of floating-point numbers

Answer

To set the alignment of the output text

Answer

To set the width of the input field

Question 14

Which function is used to format the output of array elements in the given example?

Accepted Answer

setw()

Answer

format()

Answer

printf()

Answer

setprecision()

Question 15

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

Accepted Answer

( 0 )

Answer

-1

Answer

1

Answer

It depends on the array type

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