Array initialization in C++ - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare an integer array named numbers with 5 elements.

C++

int numbers[[1]];

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A5

Bsize

C0

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable name instead of a number inside the brackets.

Leaving the brackets empty.

Using zero as the size.

The array size must be specified as an integer constant. Here, 5 elements are declared.

2fill in blank

medium

Complete the code to initialize the array numbers with values 1, 2, 3, 4, 5.

C++

int numbers[5] = [1];

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A"1, 2, 3, 4, 5"

B[1, 2, 3, 4, 5]

C(1, 2, 3, 4, 5)

D{1, 2, 3, 4, 5}

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets instead of curly braces.

Using parentheses instead of curly braces.

Using a string instead of a list of values.

Arrays are initialized using curly braces with comma-separated values.

3fill in blank

hard

Fix the error in the array initialization to correctly initialize an array of 3 floats with values 1.1, 2.2, 3.3.

C++

float values[3] = [1];

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A(1.1, 2.2, 3.3)

B[1.1, 2.2, 3.3]

C{1.1, 2.2, 3.3}

D"1.1, 2.2, 3.3"

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses or square brackets instead of curly braces.

Using a string literal instead of a list of values.

Use curly braces to initialize arrays in C++.

4fill in blank

hard

Fill both blanks to declare and initialize an array of 4 characters with letters 'a', 'b', 'c', 'd'.

C++

char letters[[1]] = [2];

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A4

B5

C{'a', 'b', 'c', 'd'}

D{'a', 'b', 'c', 'd', 'e'}

Attempts:

3 left

💡 Hint

Common Mistakes

Mismatch between array size and number of elements.

Using double quotes instead of single quotes for characters.

The array size must match the number of elements in the initializer list.

5fill in blank

hard

Fill all three blanks to declare and initialize an integer array named scores with 3 elements: 10, 20, 30.

C++

int [1][[2]] = [3];

Drag options to blanks, or click blank then click option'

Ascores

B3

C{10, 20, 30}

Dscore

Attempts:

3 left

💡 Hint

Common Mistakes

Using a wrong array name.

Mismatch between size and number of elements.

Using parentheses or square brackets for initialization.

The array name is scores, size is 3, and initialization uses curly braces with values.