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<TITLE>WHILE While Loop
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<H2>WHILE While Loop
</H2>
<P>
Section: <A HREF=sec_flow.html> Flow Control </A>
<H3>Usage</H3>
The <code>while</code> loop executes a set of statements as long as
a the test condition remains <code>true</code>. The syntax of a
<code>while</code> loop is
<PRE>
while test_expression
statements
end
</PRE>
<P>
Note that a conditional expression is considered true if
the real part of the result of the expression contains
any non-zero elements (this strange convention is adopted
for compatibility with MATLAB).
<H3>Examples</H3>
Here is a <code>while</code> loop that adds the integers from <code>1</code>
to <code>100</code>:
<PRE>
--> accum = 0;
--> k=1;
--> while (k<100), accum = accum + k; k = k + 1; end
--> accum
ans =
4950
</PRE>
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