Short variable declaration in Go - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare and initialize variable x with value 10 using short variable declaration.

Go

func main() {
    [1] := 10
    fmt.Println(x)
}

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

Avar x

Bx

Cint x

Dx var

Attempts:

3 left

💡 Hint

Common Mistakes

Using var keyword with := operator causes syntax error.

Trying to declare type explicitly with short declaration is invalid.

In Go, short variable declaration uses the syntax name := value. So x := 10 declares and initializes x with 10.

2fill in blank

medium

Complete the code to declare two variables a and b with values 5 and 7 using short variable declaration.

Go

func main() {
    [1] := 5, 7
    fmt.Println(a, b)
}

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A(a, b)

Bvar a, b

Ca, b

D[a, b]

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses or brackets around variable names is invalid.

Using var keyword with := causes syntax error.

To declare multiple variables with short declaration, list their names separated by commas before :=.

3fill in blank

hard

Fix the error in the short variable declaration of count with value 100.

Go

func main() {
    [1] 100
    fmt.Println(count)
}

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

Avar count =

Bvar count :=

Ccount :

Dcount :=

Attempts:

3 left

💡 Hint

Common Mistakes

Using var keyword with := causes syntax error.

Using = instead of := for short declaration.

Short variable declaration uses := without var keyword. So count := 100 is correct.

4fill in blank

hard

Fill both blanks to declare variables name and age with values "Alice" and 30 using short variable declaration.

Go

func main() {
    [1] := "Alice"
    [2] := 30
    fmt.Println(name, age)
}

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

Aname

Bage

Cvar

Dint

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to declare both variables in one statement with commas.

Using var keyword with := operator.

Each variable must be declared separately with short declaration syntax: name := "Alice" and age := 30.

5fill in blank

hard

Fill all three blanks to declare variables width, height, and area where width and height are 5 and 10, and area is their product using short variable declaration.

Go

func main() {
    [1] := 5
    [2] := 10
    [3] := [1] * [2]
    fmt.Println(area)
}

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

Awidth

Bheight

Carea

Dsize

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong variable names in declaration.

Trying to declare multiple variables in one line incorrectly.

Declare width and height with short declaration, then declare area as their product.