Array initialization in Go - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare an array of 5 integers.

Go

var numbers [5]int = [1]

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

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

B[5]int(1, 2, 3, 4, 5)

C[]int{1, 2, 3, 4, 5}

D[5]int{1, 2, 3, 4, 5}

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses instead of curly braces for initialization.

Using slice syntax instead of array syntax.

Omitting the size inside the square brackets.

The correct way to initialize an array with values in Go is using the syntax [size]type{values}. Here, [5]int{1, 2, 3, 4, 5} creates an array of 5 integers.

2fill in blank

medium

Complete the code to declare an array of 3 strings with default zero values.

Go

var fruits [1]

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

A[]string

B[3]string

Carray[3]string

Dstring[3]

Attempts:

3 left

💡 Hint

Common Mistakes

Using slice syntax instead of array syntax.

Writing the type before the size.

Using invalid syntax like 'array[3]string'.

To declare an array of 3 strings in Go, use [3]string. This creates an array with 3 elements, each initialized to the zero value for strings (empty string).

3fill in blank

hard

Fix the error in the array initialization syntax.

Go

var primes = [1]int{2, 3, 5, 7, 11}

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

A[5]

B(5)

D{5}

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses instead of square brackets for size.

Omitting the size entirely.

Using curly braces for size.

The correct syntax to initialize an array is [size]type{values}. Here, [5]int{2, 3, 5, 7, 11} creates an array of 5 integers.

4fill in blank

hard

Fill both blanks to create an array of 4 floats initialized with values.

Go

var scores [1] = [2]{98.5, 87.0, 92.3, 88.8}}

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

A[4]float64

B[]float64

C[4]

Dfloat64

Attempts:

3 left

💡 Hint

Common Mistakes

Using slice syntax for the value initialization.

Omitting the size in the value initialization.

Using the type name alone without size in the value.

The declaration var scores [4]float64 = [4]{98.5, 87.0, 92.3, 88.8} is almost correct except the second blank should be [4] to specify the array size before the values. This fully defines an array of 4 float64 values.

5fill in blank

hard

Fill all three blanks to declare and initialize an array of 3 booleans with true, false, true.

Go

var flags [1] = [2][3]

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

A[3]bool

B[3]

C{true, false, true}

D[]bool

Attempts:

3 left

💡 Hint

Common Mistakes

Using slice syntax instead of array syntax.

Omitting the size in the value initialization.

Using parentheses instead of curly braces for values.

The correct declaration is var flags [3]bool = [3]{true, false, true}. The first blank is the type with size, the second blank is the size in square brackets for the value, and the third blank is the list of boolean values inside curly braces.