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<h3 class="section">10.6 The <code>break</code> Statement</h3>

<p><a name="index-g_t_0040code_007bbreak_007d-statement-573"></a>
The <code>break</code> statement jumps out of the innermost <code>for</code> or
<code>while</code> loop that encloses it.  The <code>break</code> statement may only
be used within the body of a loop.  The following example finds the
smallest divisor of a given integer, and also identifies prime numbers:

<pre class="example">     num = 103;
     div = 2;
     while (div*div &lt;= num)
       if (rem (num, div) == 0)
         break;
       endif
       div++;
     endwhile
     if (rem (num, div) == 0)
       printf ("Smallest divisor of %d is %d\n", num, div)
     else
       printf ("%d is prime\n", num);
     endif
</pre>
   <p>When the remainder is zero in the first <code>while</code> statement, Octave
immediately <dfn>breaks out</dfn> of the loop.  This means that Octave
proceeds immediately to the statement following the loop and continues
processing.  (This is very different from the <code>exit</code> statement
which stops the entire Octave program.)

   <p>Here is another program equivalent to the previous one.  It illustrates
how the <var>condition</var> of a <code>while</code> statement could just as well
be replaced with a <code>break</code> inside an <code>if</code>:

<pre class="example">     num = 103;
     div = 2;
     while (1)
       if (rem (num, div) == 0)
         printf ("Smallest divisor of %d is %d\n", num, div);
         break;
       endif
       div++;
       if (div*div &gt; num)
         printf ("%d is prime\n", num);
         break;
       endif
     endwhile
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