break and continue
- Go course
- Beginner
- Lesson 39/90
- 4 min
Learn break and continue to exit or skip loop iterations.
break and continue
break ends the loop completely; continue skips only the rest of the current iteration and moves to the next:
for i := 1; i <= 10; i++ {
if i%2 == 0 {
continue // skip evens
}
if i > 7 {
break // stop after 7
}
fmt.Print(i, " ")
}
// 1 3 5 7Labeled break
Give the outer loop a label and write break Label to leave nested loops in one step:
Ara:
for _, satir := range tablo {
for _, v := range satir {
if v == hedef {
fmt.Println("bulundu")
break Ara
}
}
}continue Label similarly moves to the outer loop's next iteration. A break inside a switch ends only the switch; a label is needed to leave the loop.
Practice Positive sum
Iterate over []int{4, -2, 7, 0, -5, 10, 99}: skip negatives with continue, stop with break when you see 99, and sum the rest. Print the sum.
Starter code
package main
import "fmt"
func main() {
// buraya yaz
}Sample solution
package main
import "fmt"
func main() {
toplam := 0
for _, n := range []int{4, -2, 7, 0, -5, 10, 99} {
if n < 0 {
continue
}
if n == 99 {
break
}
toplam += n
}
fmt.Println(toplam)
}Expected output
21
Questions and answers
Review the lesson questions together with their answers. To test yourself, solve the lesson interactively.
1 In two nested loops, what does a <code>break</code> in the inner loop end?
- The program
- Only the inner loop Correct answer
- Both loops
- The function
Explanation: break ends the nearest loop (or switch); to end the outer one a label is used.
2 Skip the iteration
for _, n := range sayilar {
if n < 0 {
____
}
toplam += n
}for _, n := range sayilar {
if n < 0 {
continue
}
toplam += n
}Explanation: continue skips the negative number and moves to the next element.
3 Statement and effect
| Term | Meaning |
|---|---|
break |
Ends the loop |
continue |
Moves to the next iteration |
break Etiket |
Leaves the outer loop |
return |
Leaves the function |