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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<TITLE>BREAK Exit Execution In Loop
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<BODY>
<H2>BREAK Exit Execution In Loop
</H2>
<P>
Section: <A HREF=sec_flow.html> Flow Control </A>
<H3>Usage</H3>
The <code>break</code> statement is used to exit a loop prematurely.
It can be used inside a <code>for</code> loop or a <code>while</code> loop. The
syntax for its use is
<PRE>
break
</PRE>
<P>
inside the body of the loop. The <code>break</code> statement forces
execution to exit the loop immediately.
<H3>Example</H3>
Here is a simple example of how <code>break</code> exits the loop.
We have a loop that sums integers from <code>1</code> to <code>10</code>, but
that stops prematurely at <code>5</code> using a <code>break</code>. We will
use a <code>while</code> loop.
<P>
<PRE>
break_ex.m
function accum = break_ex
accum = 0;
i = 1;
while (i<=10)
accum = accum + i;
if (i == 5)
break;
end
i = i + 1;
end
</PRE>
<P>
The function is exercised here:
<PRE>
--> break_ex
ans =
15
--> sum(1:5)
ans =
15
</PRE>
<P>
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