While

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

Example: i = 0; While[i < 0, tot += f[i]; i++]. Note that the roles of ; and , are reversed relative to the C programming language.

See also: Do, For, Table.

Examples

Using InstantCalculators

Here are the InstantCalculators for the While function. Enter the parameters for your calculation and click Calculate to see the result.

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Initialize the variable i before evaluating the While False Text Input.

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Entering Commands Directly

You can paste a template for this command via the Text Input button on the While Function Controller.

The iteration variable, i, must first be initialized.

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The body of While must have an iteration command. The iteration in this example adds 2.

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Clear the variable definition.

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The body of While can take more that just Print commands. Evaluate the cell to see the output.

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Clear the variable definition.

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