Why loops are needed in Go - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print numbers from 1 to 3 using a loop.

Go

for i := 1; i <= [1]; i++ {
    fmt.Println(i)
}

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

A5

B3

C0

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Using a number too large or too small for the loop condition.

The loop runs while i is less than or equal to 3, printing numbers 1, 2, and 3.

2fill in blank

medium

Complete the code to sum numbers from 1 to 4 using a loop.

Go

sum := 0
for i := 1; i <= 4; [1] {
    sum += i
}
fmt.Println(sum)

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

Ai++

Bi += 2

Ci = i

Di--

Attempts:

3 left

💡 Hint

Common Mistakes

Using i-- which decreases the variable and causes an infinite loop.

The loop variable i increases by 1 each time to add all numbers from 1 to 4.

3fill in blank

hard

Fix the error in the loop to print numbers from 1 to 5.

Go

for i := 1; i < [1]; i++ {
    fmt.Println(i)
}

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

A5

B4

C6

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using i < 5 which stops before printing 5.

Using i < 6 makes the loop print numbers 1 to 5 because it stops before 6.

4fill in blank

hard

Fill both blanks to create a loop that prints even numbers from 2 to 8.

Go

for i := [1]; i <= [2]; i += 2 {
    fmt.Println(i)
}

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

A2

B1

C8

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Starting at 1 or stopping before 8.

The loop starts at 2 and goes up to 8, increasing by 2 each time to print even numbers.

5fill in blank

hard

Fill all three blanks to create a loop that prints numbers from 10 down to 6.

Go

for i := [1]; i [2] [3]; i-- {
    fmt.Println(i)
}

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

A10

B>=

C6

D<=

Attempts:

3 left

💡 Hint

Common Mistakes

Using <= instead of >= in the condition.

The loop starts at 10 and decreases by 1 until it reaches 6, printing numbers 10 to 6.