Assignment operators in Go - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add 5 to variable x using an assignment operator.

Go

package main

import "fmt"

func main() {
    x := 10
    x [1] 5
    fmt.Println(x)
}

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

A/=

B-=

C*=

D+=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-' instead of '+' will subtract instead of add.

Using '*' or '/' will multiply or divide, not add.

The += operator adds the value on the right to the variable on the left.

2fill in blank

medium

Complete the code to multiply variable y by 3 using an assignment operator.

Go

package main

import "fmt"

func main() {
    y := 4
    y [1] 3
    fmt.Println(y)
}

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

A/=

B+=

C*=

D-=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '+=' will add instead of multiply.

Using '-=' or '/=' will subtract or divide, not multiply.

The *= operator multiplies the variable by the value on the right and assigns the result back.

3fill in blank

hard

Fix the error in the code by choosing the correct assignment operator to subtract 2 from z.

Go

package main

import "fmt"

func main() {
    z := 15
    z [1] 2
    fmt.Println(z)
}

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

A+=

B-=

C*=

D/=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '+=' will add instead of subtract.

Using '*=' or '/=' will multiply or divide, not subtract.

The -= operator subtracts the value on the right from the variable and assigns the result back.

4fill in blank

hard

Fill both blanks to divide variable a by 4 and assign the result back, then print it.

Go

package main

import "fmt"

func main() {
    a := 20
    a [1] 4
    fmt.[2](a)
}

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

A/=

BPrintln

CPrintf

D+=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '+=' instead of '/=' will add instead of divide.

Using Printf without formatting string causes error.

The /= operator divides and assigns. Println prints the value with a newline.

5fill in blank

hard

Fill all three blanks to create a map with keys as uppercase letters and values as their squares, only for numbers greater than 3.

Go

package main

import "fmt"

func main() {
    nums := []int{1, 2, 3, 4, 5}
    squares := map[string]int{}
    for _, n := range nums {
        if n [3] 3 {
            squares[[1]] = [2]
        }
    }
    fmt.Println(squares)
}

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

Astring(rune(n + 64))

Bn * n

C>

Dn + n

Attempts:

3 left

💡 Hint

Common Mistakes

Using '+' instead of '*' for squaring.

Using '<' instead of '>' for filtering.

Not converting number to string for map keys.

We convert number to uppercase letter by adding 64 and casting to rune then string. We square the number with n * n. We filter numbers greater than 3 with >.