Infinite loops in Go - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create an infinite loop that prints "Hello" repeatedly.

Go

package main

import "fmt"

func main() {
    for [1] {
        fmt.Println("Hello")
    }
}

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

Atrue

Bfalse

Ci < 5

Di == 0

Attempts:

3 left

💡 Hint

Common Mistakes

Using a condition that becomes false eventually, so the loop stops.

Using false which never runs the loop.

Using true in the for loop condition creates an infinite loop in Go.

2fill in blank

medium

Complete the code to create an infinite loop using the classic for loop syntax.

Go

package main

import "fmt"

func main() {
    for [1] {
        fmt.Println("Looping forever")
    }
}

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

Ai := 0; i < 10; i++

Bi == 0

Ci < 5

D;;

Attempts:

3 left

💡 Hint

Common Mistakes

Putting a condition that eventually becomes false.

Using a normal for loop with limits.

In Go, a for loop with empty initialization, condition, and post statements (for ;;) runs infinitely.

3fill in blank

hard

Fix the error in the infinite loop code so it compiles and runs correctly.

Go

package main

import "fmt"

func main() {
    for [1] {
        fmt.Println("Running")
    }
}

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

A1 == 1

BTrue

Ctrue

Dfor

Attempts:

3 left

💡 Hint

Common Mistakes

Using uppercase True instead of lowercase true.

Putting for inside the loop condition.

Go uses lowercase true for boolean true. Using True causes a compile error.

4fill in blank

hard

Fill both blanks to create an infinite loop that prints numbers starting from 1.

Go

package main

import "fmt"

func main() {
    i := 1
    for [1] {
        fmt.Println(i)
        i[2]
    }
}

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

Atrue

B++

C+=

D--

Attempts:

3 left

💡 Hint

Common Mistakes

Using ++ which is a statement, not an expression.

Using -- which decreases the number.

The loop condition true makes the loop infinite. Using i += 1 increases i by 1 each time.

5fill in blank

hard

Fill all three blanks to create an infinite loop that prints "Go!" every second.

Go

package main

import (
    "fmt"
    "time"
)

func main() {
    for [1] {
        fmt.Println([2])
        time.Sleep([3])
    }
}

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

Atrue

B"Go!"

Ctime.Second

Dfalse

Attempts:

3 left

💡 Hint

Common Mistakes

Using false which stops the loop immediately.

Forgetting to import time package.

Using a string without quotes.

The loop condition true makes it infinite. Printing "Go!" shows the message. time.Sleep(time.Second) pauses for one second each loop.