Question 1

In C++, how do you declare an array named 'numbers' with 5 elements of type int?

Accepted Answer

int numbers[5];

Answer

array numbers[5];

Answer

numbers = int[5];

Answer

int[] numbers = new int[5];

Question 2

How do you access the fourth element in an array named 'scores' in C++?

Accepted Answer

scores[3];

Answer

scores{4};

Answer

scores$4;

Answer

scores(3);

Question 3

What is the syntax to assign the value 10 to the third element in an array named 'data' in C++?

Accepted Answer

data[2] = 10;

Answer

assign data[2] = 10;

Answer

10 = data[2];

Answer

data{2} = 10;

Question 4

How do you iterate through all elements of an array named 'ages' and print each element in C++?

Accepted Answer

for(int i = 0; i < sizeof(ages) / sizeof(ages[0]); i++) { cout << ages[i] << ' '; }

Answer

while(int i = 0; i < ages.length; i++) { cout << ages[i] << ' '; }

Answer

for(int i = 1; i < sizeof(ages); i++) { cout << ages[i] << ' '; }

Answer

foreach(int i in ages) { cout << i << ' '; }

Question 5

What is the correct way to declare a 2D array named 'matrix' with 3 rows and 4 columns in C++?

Accepted Answer

int matrix[3][4];

Answer

int matrix = new int[3][4];

Answer

int matrix(3, 4);

Answer

matrix = int[3][4];

Question 6

What is the syntax to access the value at row 1, column 2 in a 2D array named 'grid' in C++?

Accepted Answer

grid[1][2];

Answer

grid{1, 2};

Answer

grid(1, 2);

Answer

grid$1$2;

Question 7

What is the output of the following code snippet in C++? int numbers[] = {10, 20, 30, 40, 50}; cout << numbers[2];

Accepted Answer

30

Answer

50

Answer

40

Answer

10

Question 8

How do you find the number of elements in an array named 'myArray' in C++?

Accepted Answer

sizeof(myArray) / sizeof(myArray[0])

Answer

length(myArray)

Answer

sizeOfArray(myArray)

Answer

countElements(myArray)

Question 9

What is an array in C++?

Accepted Answer

A collection of elements of the same data type stored in contiguous memory locations.

Answer

A function that calculates the sum of elements in a sequence.

Answer

A type of loop used for iteration in C++.

Answer

A standard input/output operation in C++.

Question 10

How do you use a loop to initialize an array named 'scores' with values 1 to 10 in C++?

Accepted Answer

for(int i = 0; i < 10; i++) { scores[i] = i + 1; }

Answer

while(scores <= 10) { scores[scores] = i; i++; }

Answer

for(int i = 1; i <= 10; i++) { scores[i-1] = i; }

Answer

for(int i = 1; i < 11; i++) { scores[i] = i; }

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