3 section

Which of the following data types is used to store multiple values of the same data type in a single variable?

• int

• float

• char

• array

Which statement is used to read a string with spaces in C++?

• cin >> str;

• getline(cin, str);

• scanf("%s", str);

• None of the above

Which function is used to find the length of a string in C++?

• str.length()

• strlen(str)

• size(str)

• None of the above

Which statement is used to print the value of an array element at a particular index?

• cout << array[index];

• print(array[index]);

• print array[index];

• None of the above

Which of the following is not a valid way to initialize an array in C++?

• int arr[] = {1, 2, 3};

• int arr[3] = {1, 2, 3};

• int arr[3] = {1};

• int arr[3] = {};

Which of the following operators is used to concatenate two strings in C++?

• +

• &

• %

• |

What is the output of the following code snippet?

int arr[] = {1, 2, 3};

cout << arr[1];

• 1

• 2

• 3

• Compilation error

Which of the following statements is used to access the last element of an array in C++?

• arr[length-1]

• arr[length]

• arr[length+1]

• arr[-1]

Which of the following is not a valid way to declare a variable in C++?

• int num;

• float num = 3.14;

• char letter = 'a';

• None of the above