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Built-in Mathematica Symbol

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While

While[test, body]
evaluates test, then body, repetitively, until test first fails to give True.

MORE INFORMATION

While[test] does the loop with a null body.

If Break[] is generated in the evaluation of body, the While loop exits.

Continue[] exits the evaluation of body, and continues the loop.

Unless an explicit Return is used, the value returned by While is Null.

Note that in an example like i=0;While[i<0, tot+=f[i];i++] the roles of ; and , are reversed relative to C-like programming languages.

Basic Examples (1)

Print and increment n while the condition n<4 is satisfied:

Generalizations & Extensions (1)

Applications (2)

Properties & Relations (4)

Do For NestWhile TakeWhile LengthWhile Nest Fold Select Throw

Loops and Control Structures

Repetitive Operations

Language Overview

Looping Constructs

Procedural Programming

Demonstrations with While (Wolfram Demonstrations Project)

NKS|Online (A New Kind of Science)

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