While Loops

While loops repeat code as long as a condition is true. Use them when you don't know how many iterations you need.

Basic While Loop

While vs For

Do...While Loop

Executes at least once, then checks the condition:

Infinite Loop Prevention

Finding Values

Exercise: Countdown

Create a countdown from 5 to 1:

Exercise: Guess the Pattern

Find when a growing number exceeds 1000: