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<title>7.2 The while statement
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<H1><A NAME=
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"while"></A>
7.2 The
<tt class=
"keyword">while
</tt> statement
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The
<tt class=
"keyword">while
</tt> statement is used for repeated execution as long
as an expression is true:
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<td><a id='tok-while_stmt' xml:id='tok-while_stmt'
>while_stmt
</a></td>
<td>"while" <a class='grammartoken'
href=
"Booleans.html#tok-expression">expression
</a> ":" <a class='grammartoken'
href=
"compound.html#tok-suite">suite
</a></td></tr>
<td><code>[
"else" ":" <a class='grammartoken'
href=
"compound.html#tok-suite">suite
</a>]
</code></td></tr>
<a class=
"grammar-footer"
href=
"grammar.txt" type=
"text/plain"
>Download entire grammar as text.
</a>
This repeatedly tests the expression and, if it is true, executes the
first suite; if the expression is false (which may be the first time it
is tested) the suite of the
<tt class=
"keyword">else
</tt> clause, if present, is
executed and the loop terminates.
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A
<tt class=
"keyword">break
</tt> statement executed in the first suite terminates the
loop without executing the
<tt class=
"keyword">else
</tt> clause's suite. A
<tt class=
"keyword">continue
</tt> statement executed in the first suite skips the rest
of the suite and goes back to testing the expression.
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<span class=
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2005.
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