Go Language Break Statement

Go Language Loop Statements

The break statement in Go language is used for the following purposes:

• To exit a loop and proceed to the statement following the loop.

• In a switch statement, break is used to exit after executing a case.

• In nested loops, break can be used with a label to specify which loop to exit.

Syntax

The syntax for the break statement is as follows:

break;

The flowchart for the break statement is shown below:

Example

Break the loop when the variable a is greater than 15:

Example

package main

import "fmt"

func main() {
   /* Define local variables */
   var a int = 10

   /* for loop */
   for a < 20 {
      fmt.Printf("Value of a: %d\n", a)
      a++
      if a > 15 {
         /* Break the loop using break statement */
         break
      }
   }
}

The output of the above example is:

Value of a: 10
Value of a: 11
Value of a: 12
Value of a: 13
Value of a: 14
Value of a: 15

The following example demonstrates the use of labels and no labels in nested loops:

Example

package main

import "fmt"

func main() {

   // Without label
   fmt.Println("---- break ----")
   for i := 1; i <= 3; i++ {
      fmt.Printf("i: %d\n", i)
      for i2 := 11; i2 <= 13; i2++ {
         fmt.Printf("i2: %d\n", i2)
         break
      }
   }

   // With label
   fmt.Println("---- break label ----")
   re:
      for i := 1; i <= 3; i++ {
         fmt.Printf("i: %d\n", i)
         for i2 := 11; i2 <= 13; i2++ {
            fmt.Printf("i2: %d\n", i2)
            break re
         }
      }
}

The output of the above example is:

---- break ----
i: 1
i2: 11
i: 2
i2: 11
i: 3
i2: 11
---- break label ----
i: 1
i2: 11

Go Language Loop Statements