while-loop.md

group
Loops

While Loops and Do-While Loops

While loops execute a statement while a condition is true. This article explains how to make them.

Overview

A while loop executes some statements while a condition is true. If the condition was originally false, a while loop will not run. A do-while loop will always run at least once, even if the condition starts out as false.

You can write a while loop by writing @while {condition}, and putting statements inside. You can write a do-while loop by writing @dowhile {condition}, and putting statements inside.

Example

$money = 0

start
  @while $money <= 500
    $money += 50
    @nowait $money

The example above will increment money by 50 until it is greater than 500. However, if money is already greater than 500, it will not run.

The example below will do the same thing, but will always increment money at least once.

$money = 0

start
  @dowhile $money <= 500
    $money += 50
    @nowait $money