golang-loops

A loop lets you repeat code. There are different types of loops, one of them is a for loop. For loops in <a href="https://golang.org/">Go (golang)</a> are more similar to C/Java than Python. In Python the syntax is

for i in range(1,10):

In C/Java the syntax is

for (i = 1; i <= 10; i++) {

But in Golang

for i := 1; i <= 10; i++ {

So it's inspired by those languages.

For loop explained

In the above program, what does it mean? First the initial value of variable i is 1.

i := 1;

The conditional statement will checks if i <= 10.

i <= 10;

If that is true it stops the loop. If not, it continues inside the loop. The post statement adds 1 to i every iteration.

i++

In other words, i++ is the same as i = i + 1

Example

A program with a for loop counting from 1 to 10 becomes:

package main

import (  
    "fmt"
)

func main() {  
    for i := 1; i <= 10; i++ {
        fmt.Printf(" %d",i)
    }
}

The other stuff is loading go, importing the fmt module and the main loop. You can also use <a href="https://golangr.com/while/">while loops in golang</a>

Related links:

• <a href="https://golang.org/">Golang official website</a>
• <a href="https://golangr.com/">Go tutorial</a>