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<a href="#func-members">Functions</a> </div>
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<div class="title">prime.c File Reference</div> </div>
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</div><!--header-->
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<div class="contents">
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<p>Program to identify if a number is <a href="https://en.wikipedia.org/wiki/Prime_number">prime number</a> or not.
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<a href="#details">More...</a></p>
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<div class="textblock"><code>#include <assert.h></code><br />
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<code>#include <math.h></code><br />
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<code>#include <stdbool.h></code><br />
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<code>#include <stdio.h></code><br />
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</div><div class="textblock"><div class="dynheader">
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Include dependency graph for prime.c:</div>
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<div class="dyncontent">
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<div class="center"><iframe scrolling="no" frameborder="0" src="../../da/d81/prime_8c__incl.svg" width="352" height="112"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:a6384596f117decd77da25af95ab1704f"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d93/prime_8c.html#a6384596f117decd77da25af95ab1704f">isPrime</a> (int x)</td></tr>
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<tr class="memdesc:a6384596f117decd77da25af95ab1704f"><td class="mdescLeft"> </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>
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<tr class="separator:a6384596f117decd77da25af95ab1704f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae1a3968e7947464bee7714f6d43b7002"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d93/prime_8c.html#ae1a3968e7947464bee7714f6d43b7002">test</a> ()</td></tr>
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<tr class="memdesc:ae1a3968e7947464bee7714f6d43b7002"><td class="mdescLeft"> </td><td class="mdescRight">Test function. <a href="../../da/d93/prime_8c.html#ae1a3968e7947464bee7714f6d43b7002">More...</a><br /></td></tr>
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<tr class="separator:ae1a3968e7947464bee7714f6d43b7002"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d93/prime_8c.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a> ()</td></tr>
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<tr class="memdesc:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="mdescLeft"> </td><td class="mdescRight">Driver Code. <a href="../../da/d93/prime_8c.html#ae66f6b31b5ad750f1fe042a706a4e3d4">More...</a><br /></td></tr>
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<tr class="separator:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>Program to identify if a number is <a href="https://en.wikipedia.org/wiki/Prime_number">prime number</a> or not. </p>
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</div><h2 class="groupheader">Function Documentation</h2>
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<a id="a6384596f117decd77da25af95ab1704f"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a6384596f117decd77da25af95ab1704f">◆ </a></span>isPrime()</h2>
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<td class="memname">bool isPrime </td>
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<td>(</td>
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<td class="paramtype">int </td>
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<td class="paramname"><em>x</em></td><td>)</td>
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<td></td>
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</div><div class="memdoc">
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<p>Check if a given number is prime number or not. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">x</td><td>number to check </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd><code>true</code> if given number is prime number, otherwise <code>false</code> </dd></dl>
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<div class="fragment"><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> {</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  <span class="keywordflow">if</span> (x == 2)</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  {</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  }</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="keywordflow">if</span> (x < 2 || x % 2 == 0)</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  {</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  }</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  </div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keywordtype">double</span> squareRoot = sqrt(x);</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  </div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 3; i <= squareRoot; i += 2)</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  {</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordflow">if</span> (x % i == 0)</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  {</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  }</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  }</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> }</div>
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</div><!-- fragment -->
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<a id="ae66f6b31b5ad750f1fe042a706a4e3d4"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ae66f6b31b5ad750f1fe042a706a4e3d4">◆ </a></span>main()</h2>
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<td class="memname">int main </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td></td>
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<p>Driver Code. </p>
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<dl class="section return"><dt>Returns</dt><dd>None </dd></dl>
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<div class="fragment"><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> {</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <a class="code" href="../../da/d93/prime_8c.html#ae1a3968e7947464bee7714f6d43b7002">test</a>();</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> }</div>
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</div><!-- fragment --><div class="dynheader">
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Here is the call graph for this function:</div>
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<div class="dyncontent">
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<div class="center"><iframe scrolling="no" frameborder="0" src="../../da/d93/prime_8c_ae66f6b31b5ad750f1fe042a706a4e3d4_cgraph.svg" width="268" height="38"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe>
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<a id="ae1a3968e7947464bee7714f6d43b7002"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ae1a3968e7947464bee7714f6d43b7002">◆ </a></span>test()</h2>
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<td class="memname">void test </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<p>Test function. </p>
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<dl class="section return"><dt>Returns</dt><dd>void </dd></dl>
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<div class="fragment"><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> {</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="comment">/* all the prime numbers less than 100 */</span></div>
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<div class="line"><a name="l00046"></a><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>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97};</div>
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<div class="line"><a name="l00048"></a><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 < size;</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  ++i)</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  {</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  assert(<a class="code" href="../../da/d93/prime_8c.html#a6384596f117decd77da25af95ab1704f">isPrime</a>(primers[i]));</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  }</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  </div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">/* Example Non-prime numbers */</span></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordtype">int</span> NonPrimers[] = {-1, 0, 1, 4, 6, 8, 9, 10};</div>
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<div class="line"><a name="l00056"></a><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>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  i < size; ++i)</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  {</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  assert(!<a class="code" href="../../da/d93/prime_8c.html#a6384596f117decd77da25af95ab1704f">isPrime</a>(NonPrimers[i]));</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  }</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> }</div>
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<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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<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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