Go Language Loop Control Statement

Loop control statements in Go language are used to change the execution of the program. When the execution of a given loop leaves its scope, the objects created within the scope are also destroyed. Go language supports3Types of loop control statements:

1. Break

2. Goto

3. Continue

break statement

The break statement is used to terminate the loop or statement it is in. Control is then passed to the statement following the break statement (if there is one). If the break statement exists within nested loops, it only terminates those loops that contain the break statement.

Flowchart:

package main　
　　
import "fmt"
　　
func main() {　
　　　for i:=0; i<5; i++{　
　　　　　　　　　
　　　fmt.Println(i)　
　　　　　
　　　//For loop at i =　3then break
　　　if i ==　3{　
　　　　　　　　　break;　
　　{}　
　　　{}　
　　
　　　　　
{}

Output:

0
1
2
3

goto statement

This statement is used to transfer control to a labeled statement in the program. A label is a valid identifier placed before the control transfer statement. Due to the difficulty of tracking the control flow of the program, programmers usually do not use goto statements.

Flowchart:

package main　
　　
import "fmt"
　　
func main() {　
　　　var x int = 0　
　　　　　
　　　//The working principle of the for loop is the same as the while loop
　　Label1: for x <　8　{　
　　　　　　if x ==　5　{　
　　　　　　　　　　　
　　　　　　　　　//Using goto statements
　　　　　　　　　x = x　+　1;　
　　　　　　　　　goto Label1　
　　　　　　{}　
　　　　　　fmt.Printf("Value: %d\n", x);　
　　　　　　x++;　　　　　　
　　　{}　　　
{}

Output:

Value: 0
Value:　1
Value:　2
Value:　3
Value:　4
Value:　6
Value:　7

continue statement

This statement is used to skip the execution part of the loop under specific conditions. After that, it transfers control back to the beginning of the loop. Essentially, it skips the following statements and continues to the next iteration of the loop.

Flowchart:

package main
import "fmt"
func main() {
　　　　var x int = 0
　　　　//The working principle of the for loop is the same as the while loop
　　　　for x <　8　{
　　　　　　　　if x ==　5　{
　　　　　　　　　　　　//Skip two iterations
　　　　　　　　　　　　x = x　+　2
　　　　　　　　　　　　continue
　　　　　　　　{}
　　　　　　　　fmt.Printf("Value: %d\n", x)
　　　　　　　　x++
　　　　{}
{}

Output:

Value: 0
Value:　1
Value:　2
Value:　3
Value:　4
Value:　7