while.adoc

title	categories	subCategories
while	Structure	Control Structure

while loop

Description

A while loop will loop continuously, and infinitely, until the expression inside the parenthesis, () becomes false. Something must change the tested variable, or the while loop will never exit. This could be in your code, such as an incremented variable, or an external condition, such as testing a sensor.

Syntax

while (condition) {
  // statement(s)
}

Parameters

condition: a boolean expression that evaluates to true or false.

Example Code

var = 0;
while (var < 200) {
  // do something repetitive 200 times
  var++;
}
// Here, do whatever comes after the while loop ends

See also

https://www.arduino.cc/reference/en/language/structure/control-structure/break/[Break^]

• EXAMPLE While Loop