Why loop control is required in Go

Introduction

Loop control helps manage how many times a loop runs. It stops loops from running forever and lets you skip or stop parts inside the loop.

When you want to repeat a task a certain number of times.

When you need to stop a loop early if a condition is met.

When you want to skip some steps inside a loop but continue running it.

When you want to avoid infinite loops that freeze your program.

Syntax

Go

for initialization; condition; post {
    // loop body
    // use break to exit loop early
    // use continue to skip to next iteration
}

break stops the loop completely.

continue skips the rest of the current loop and moves to the next cycle.

Examples

This loop stops when i equals 3, so it prints 0, 1, 2 only.

Go

for i := 0; i < 5; i++ {
    if i == 3 {
        break
    }
    fmt.Println(i)
}

This loop skips printing 2 but continues with other numbers.

Go

for i := 0; i < 5; i++ {
    if i == 2 {
        continue
    }
    fmt.Println(i)
}

Sample Program

This program loops from 0 to 9. It skips even numbers and stops completely when it reaches 5.

Go

package main

import "fmt"

func main() {
    for i := 0; i < 10; i++ {
        if i == 5 {
            fmt.Println("Stopping loop at", i)
            break
        }
        if i%2 == 0 {
            fmt.Println("Skipping even number", i)
            continue
        }
        fmt.Println("Number", i)
    }
}

Important Notes

Without loop control, loops might run forever and crash your program.

Use break to exit loops early when you find what you need.

Use continue to skip unwanted steps but keep looping.

Summary

Loop control helps manage how loops run and stop.

break stops the loop completely.

continue skips to the next loop cycle.