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<title>BitMagic: sample1.cpp</title>
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<h1>sample1.cpp</h1>Example of how to use bvector template class to set bits and then retrieve indexes of ON bits.<p>
For more information please visit: <a href="http://bmagic.sourceforge.net">http://bmagic.sourceforge.net</a><p>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="a00048.html#a43">bm::bvector&lt;&gt;::get_next()</a> <p>
<a class="el" href="a00048.html#a42">bm::bvector&lt;&gt;::get_first()</a> <p>
<a class="el" href="a00048.html#a20">bm::bvector&lt;&gt;::set()</a> <p>
<a class="el" href="a00048.html#a26">bm::bvector&lt;&gt;::count()</a> <p>
<a class="el" href="a00048.html#a24">bm::bvector&lt;&gt;::clear()</a></dd></dl>
<div class="fragment"><pre class="fragment"><span class="comment">/*</span>
<span class="comment">Copyright(c) 2002-2005 Anatoliy Kuznetsov(anatoliy_kuznetsov at yahoo.com)</span>
<span class="comment"></span>
<span class="comment">Permission is hereby granted, free of charge, to any person </span>
<span class="comment">obtaining a copy of this software and associated documentation </span>
<span class="comment">files (the "Software"), to deal in the Software without restriction, </span>
<span class="comment">including without limitation the rights to use, copy, modify, merge, </span>
<span class="comment">publish, distribute, sublicense, and/or sell copies of the Software, </span>
<span class="comment">and to permit persons to whom the Software is furnished to do so, </span>
<span class="comment">subject to the following conditions:</span>
<span class="comment"></span>
<span class="comment">The above copyright notice and this permission notice shall be included </span>
<span class="comment">in all copies or substantial portions of the Software.</span>
<span class="comment"></span>
<span class="comment">THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, </span>
<span class="comment">EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES </span>
<span class="comment">OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. </span>
<span class="comment">IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, </span>
<span class="comment">DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, </span>
<span class="comment">ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR </span>
<span class="comment">OTHER DEALINGS IN THE SOFTWARE.</span>
<span class="comment">*/</span>
<span class="comment"></span>
<span class="comment">/** \example sample1.cpp</span>
<span class="comment">  Example of how to use bvector template class to set</span>
<span class="comment">  bits and then retrieve indexes of ON bits.</span>
<span class="comment"> </span>
<span class="comment">  For more information please visit:  http://bmagic.sourceforge.net</span>
<span class="comment"></span>
<span class="comment">  \sa bm::bvector&lt;&gt;::get_next() </span>
<span class="comment">  \sa bm::bvector&lt;&gt;::get_first() </span>
<span class="comment">  \sa bm::bvector&lt;&gt;::set()</span>
<span class="comment">  \sa bm::bvector&lt;&gt;::count() </span>
<span class="comment">  \sa bm::bvector&lt;&gt;::clear()</span>
<span class="comment">  </span>
<span class="comment"> */</span>


<span class="preprocessor">#include &lt;iostream&gt;</span>
<span class="preprocessor">#include "<a class="code" href="a00074.html">bm.h</a>"</span>

<span class="keyword">using</span> <span class="keyword">namespace </span>std;

<span class="keywordtype">int</span> <a name="a0"></a><a class="code" href="a00083.html#a0">main</a>(<span class="keywordtype">void</span>)
{
    <a name="_a1"></a><a class="code" href="a00048.html">bm::bvector&lt;&gt;</a>   bv;    <span class="comment">// Bitvector variable declaration.</span>

    cout &lt;&lt; bv.<a name="a2"></a><a class="code" href="a00048.html#a26">count</a>() &lt;&lt; endl;

    <span class="comment">// Set some bits.</span>

    bv.<a name="a3"></a><a class="code" href="a00048.html#a19">set</a>(10);
    bv.<a class="code" href="a00048.html#a19">set</a>(100);
    bv.<a class="code" href="a00048.html#a19">set</a>(1000000);

    <span class="comment">// New bitvector's count.</span>

    cout &lt;&lt; bv.<a class="code" href="a00048.html#a26">count</a>() &lt;&lt; endl;


    <span class="comment">// Print the bitvector.</span>

    <span class="keywordtype">unsigned</span> value = bv.<a name="a4"></a><a class="code" href="a00048.html#a42">get_first</a>();
    <span class="keywordflow">do</span>
    {
        cout &lt;&lt; value;
        value = bv.<a name="a5"></a><a class="code" href="a00048.html#a43">get_next</a>(value);
        <span class="keywordflow">if</span> (value)
        {
            cout &lt;&lt; <span class="stringliteral">","</span>;
        }
        <span class="keywordflow">else</span>
        {
            <span class="keywordflow">break</span>;
        }
    } <span class="keywordflow">while</span>(1);

    cout &lt;&lt; endl;

    bv.<a name="a6"></a><a class="code" href="a00048.html#a24">clear</a>();   <span class="comment">// Clean up.</span>

    cout &lt;&lt; bv.<a class="code" href="a00048.html#a26">count</a>() &lt;&lt; endl;

    <span class="comment">// We also can use operators to set-clear bits;</span>

    bv[10] = <span class="keyword">true</span>;
    bv[100] = <span class="keyword">true</span>;
    bv[10000] = <span class="keyword">true</span>;

    cout &lt;&lt; bv.<a class="code" href="a00048.html#a26">count</a>() &lt;&lt; endl;

    <span class="keywordflow">if</span> (bv[10])
    {
        bv[10] = <span class="keyword">false</span>;
    }

    cout &lt;&lt; bv.<a class="code" href="a00048.html#a26">count</a>() &lt;&lt; endl;

    <span class="keywordflow">return</span> 0;
}

</pre></div> <hr size="1"><address style="align: right;"><small>Generated on Thu Apr 20 13:28:45 2006 for BitMagic by&nbsp;
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