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<div id="projectbrief">Set of algorithms implemented in C.</div>
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<p>Program to identify if a number is <a href="https://en.wikipedia.org/wiki/Prime_number" target="_blank">prime number</a> or not.
<a href="#details">More...</a></p>
<div class="textblock"><code>#include &lt;assert.h&gt;</code><br />
<code>#include &lt;math.h&gt;</code><br />
<code>#include &lt;stdbool.h&gt;</code><br />
<code>#include &lt;stdio.h&gt;</code><br />
</div><div class="textblock"><div class="dynheader">
Include dependency graph for prime.c:</div>
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Functions</h2></td></tr>
<tr class="memitem:a6384596f117decd77da25af95ab1704f"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d93/prime_8c.html#a6384596f117decd77da25af95ab1704f">isPrime</a> (int x)</td></tr>
<tr class="memdesc:a6384596f117decd77da25af95ab1704f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check if a given number is prime number or not. <a href="../../da/d93/prime_8c.html#a6384596f117decd77da25af95ab1704f">More...</a><br /></td></tr>
<tr class="separator:a6384596f117decd77da25af95ab1704f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae1a3968e7947464bee7714f6d43b7002"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d93/prime_8c.html#ae1a3968e7947464bee7714f6d43b7002">test</a> ()</td></tr>
<tr class="memdesc:ae1a3968e7947464bee7714f6d43b7002"><td class="mdescLeft">&#160;</td><td class="mdescRight">Test function. <a href="../../da/d93/prime_8c.html#ae1a3968e7947464bee7714f6d43b7002">More...</a><br /></td></tr>
<tr class="separator:ae1a3968e7947464bee7714f6d43b7002"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d93/prime_8c.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a> ()</td></tr>
<tr class="memdesc:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Driver Code. <a href="../../da/d93/prime_8c.html#ae66f6b31b5ad750f1fe042a706a4e3d4">More...</a><br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p >Program to identify if a number is <a href="https://en.wikipedia.org/wiki/Prime_number" target="_blank">prime number</a> or not. </p>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="a6384596f117decd77da25af95ab1704f" name="a6384596f117decd77da25af95ab1704f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a6384596f117decd77da25af95ab1704f">&#9670;&#160;</a></span>isPrime()</h2>
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<td class="memname">bool isPrime </td>
<td>(</td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>x</em></td><td>)</td>
<td></td>
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<p>Check if a given number is prime number or not. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">x</td><td>number to check </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd><code>true</code> if given number is prime number, otherwise <code>false</code> </dd></dl>
<div class="fragment"><div class="line"><span class="lineno"> 17</span>{</div>
<div class="line"><span class="lineno"> 18</span> <span class="keywordflow">if</span> (x == 2)</div>
<div class="line"><span class="lineno"> 19</span> {</div>
<div class="line"><span class="lineno"> 20</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><span class="lineno"> 21</span> }</div>
<div class="line"><span class="lineno"> 22</span> <span class="keywordflow">if</span> (x &lt; 2 || x % 2 == 0)</div>
<div class="line"><span class="lineno"> 23</span> {</div>
<div class="line"><span class="lineno"> 24</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><span class="lineno"> 25</span> }</div>
<div class="line"><span class="lineno"> 26</span> </div>
<div class="line"><span class="lineno"> 27</span> <span class="keywordtype">double</span> squareRoot = sqrt(x);</div>
<div class="line"><span class="lineno"> 28</span> </div>
<div class="line"><span class="lineno"> 29</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 3; i &lt;= squareRoot; i += 2)</div>
<div class="line"><span class="lineno"> 30</span> {</div>
<div class="line"><span class="lineno"> 31</span> <span class="keywordflow">if</span> (x % i == 0)</div>
<div class="line"><span class="lineno"> 32</span> {</div>
<div class="line"><span class="lineno"> 33</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><span class="lineno"> 34</span> }</div>
<div class="line"><span class="lineno"> 35</span> }</div>
<div class="line"><span class="lineno"> 36</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><span class="lineno"> 37</span>}</div>
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<h2 class="memtitle"><span class="permalink"><a href="#ae66f6b31b5ad750f1fe042a706a4e3d4">&#9670;&#160;</a></span>main()</h2>
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<td class="memname">int main </td>
<td>(</td>
<td class="paramtype">void&#160;</td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Driver Code. </p>
<dl class="section return"><dt>Returns</dt><dd>None </dd></dl>
<div class="fragment"><div class="line"><span class="lineno"> 68</span>{</div>
<div class="line"><span class="lineno"> 69</span> <a class="code hl_function" href="../../da/d93/prime_8c.html#ae1a3968e7947464bee7714f6d43b7002">test</a>();</div>
<div class="line"><span class="lineno"> 70</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><span class="lineno"> 71</span>}</div>
<div class="ttc" id="aprime_8c_html_ae1a3968e7947464bee7714f6d43b7002"><div class="ttname"><a href="../../da/d93/prime_8c.html#ae1a3968e7947464bee7714f6d43b7002">test</a></div><div class="ttdeci">void test()</div><div class="ttdoc">Test function.</div><div class="ttdef"><b>Definition:</b> prime.c:43</div></div>
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<h2 class="memtitle"><span class="permalink"><a href="#ae1a3968e7947464bee7714f6d43b7002">&#9670;&#160;</a></span>test()</h2>
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<td class="memname">void test </td>
<td>(</td>
<td class="paramtype">void&#160;</td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Test function. </p>
<dl class="section return"><dt>Returns</dt><dd>void </dd></dl>
<div class="fragment"><div class="line"><span class="lineno"> 44</span>{</div>
<div class="line"><span class="lineno"> 45</span> <span class="comment">/* all the prime numbers less than 100 */</span></div>
<div class="line"><span class="lineno"> 46</span> <span class="keywordtype">int</span> primers[] = {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41,</div>
<div class="line"><span class="lineno"> 47</span> 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97};</div>
<div class="line"><span class="lineno"> 48</span> <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0, size = <span class="keyword">sizeof</span>(primers) / <span class="keyword">sizeof</span>(primers[0]); i &lt; size;</div>
<div class="line"><span class="lineno"> 49</span> ++i)</div>
<div class="line"><span class="lineno"> 50</span> {</div>
<div class="line"><span class="lineno"> 51</span> assert(<a class="code hl_function" href="../../da/d93/prime_8c.html#a6384596f117decd77da25af95ab1704f">isPrime</a>(primers[i]));</div>
<div class="line"><span class="lineno"> 52</span> }</div>
<div class="line"><span class="lineno"> 53</span> </div>
<div class="line"><span class="lineno"> 54</span> <span class="comment">/* Example Non-prime numbers */</span></div>
<div class="line"><span class="lineno"> 55</span> <span class="keywordtype">int</span> NonPrimers[] = {-1, 0, 1, 4, 6, 8, 9, 10};</div>
<div class="line"><span class="lineno"> 56</span> <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0, size = <span class="keyword">sizeof</span>(NonPrimers) / <span class="keyword">sizeof</span>(NonPrimers[0]);</div>
<div class="line"><span class="lineno"> 57</span> i &lt; size; ++i)</div>
<div class="line"><span class="lineno"> 58</span> {</div>
<div class="line"><span class="lineno"> 59</span> assert(!<a class="code hl_function" href="../../da/d93/prime_8c.html#a6384596f117decd77da25af95ab1704f">isPrime</a>(NonPrimers[i]));</div>
<div class="line"><span class="lineno"> 60</span> }</div>
<div class="line"><span class="lineno"> 61</span>}</div>
<div class="ttc" id="aprime_8c_html_a6384596f117decd77da25af95ab1704f"><div class="ttname"><a href="../../da/d93/prime_8c.html#a6384596f117decd77da25af95ab1704f">isPrime</a></div><div class="ttdeci">bool isPrime(int x)</div><div class="ttdoc">Check if a given number is prime number or not.</div><div class="ttdef"><b>Definition:</b> prime.c:16</div></div>
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