Golang For Loop Understanding

Introduction

This lab aims to test your understanding of the for loop in Golang.

Skills Graph

for

The code below contains different types of for loops. However, some parts of the code are incomplete, and you need to fill in the blanks to make the code work correctly.

• Basic knowledge of Golang syntax
• Familiarity with for loops in Golang

$ go run for.go
1
2
3
7
8
9
loop
1
3
5

## We'll see some other `for` forms later when we look at
## `range` statements, channels, and other data
## structures.

There is the full code below:

// `for` is Go's only looping construct. Here are
// some basic types of `for` loops.

package main

import "fmt"

func main() {

	// The most basic type, with a single condition.
	i := 1
	for i <= 3 {
		fmt.Println(i)
		i = i + 1
	}

	// A classic initial/condition/after `for` loop.
	for j := 7; j <= 9; j++ {
		fmt.Println(j)
	}

	// `for` without a condition will loop repeatedly
	// until you `break` out of the loop or `return` from
	// the enclosing function.
	for {
		fmt.Println("loop")
		break
	}

	// You can also `continue` to the next iteration of
	// the loop.
	for n := 0; n <= 5; n++ {
		if n%2 == 0 {
			continue
		}
		fmt.Println(n)
	}
}

Summary

In this lab, you learned about different types of for loops in Golang and how to use them. You also practiced filling in incomplete code blocks to make them work correctly.