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<div class="header">
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<div class="headertitle"><div class="title">gcd_recursive_euclidean.cpp</div></div>
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<div class="contents">
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<a href="../../d4/d45/gcd__recursive__euclidean_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include <iostream></span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span></div>
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<div class="foldopen" id="foldopen00014" data-start="{" data-end="}">
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"><a class="line" href="../../d4/d45/gcd__recursive__euclidean_8cpp.html#ae48807fa2b7000afae599e67f327545e"> 14</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="../../d4/d45/gcd__recursive__euclidean_8cpp.html#ae48807fa2b7000afae599e67f327545e">gcd</a>(<span class="keywordtype">int</span> num1, <span class="keywordtype">int</span> num2) {</div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span> <span class="keywordflow">if</span> (num1 <= 0 | num2 <= 0) {</div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> <span class="keywordflow">throw</span> std::domain_error(<span class="stringliteral">"Euclidean algorithm domain is for ints > 0"</span>);</div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> }</div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> <span class="keywordflow">if</span> (num1 == num2) {</div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> <span class="keywordflow">return</span> num1;</div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> }</div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> </div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// Everything divides 0</span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> <span class="keywordflow">if</span> (num1 == 0)</div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> <span class="keywordflow">return</span> num2;</div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> <span class="keywordflow">if</span> (num2 == 0)</div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> <span class="keywordflow">return</span> num1;</div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> </div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> <span class="comment">// base case</span></div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> <span class="keywordflow">if</span> (num1 == num2)</div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> <span class="keywordflow">return</span> num1;</div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> </div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> <span class="comment">// a is greater</span></div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> <span class="keywordflow">if</span> (num1 > num2)</div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> <span class="keywordflow">return</span> <a class="code hl_function" href="../../d4/d45/gcd__recursive__euclidean_8cpp.html#ae48807fa2b7000afae599e67f327545e">gcd</a>(num1 - num2, num2);</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keywordflow">return</span> <a class="code hl_function" href="../../d4/d45/gcd__recursive__euclidean_8cpp.html#ae48807fa2b7000afae599e67f327545e">gcd</a>(num1, num2 - num1);</div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span>}</div>
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</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span></div>
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<div class="foldopen" id="foldopen00042" data-start="{" data-end="}">
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"><a class="line" href="../../d4/d45/gcd__recursive__euclidean_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4"> 42</a></span><span class="keywordtype">int</span> <a class="code hl_function" href="../../d4/d45/gcd__recursive__euclidean_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a>() {</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> std::cout << <span class="stringliteral">"gcd of 120,7 is "</span> << (<a class="code hl_function" href="../../d4/d45/gcd__recursive__euclidean_8cpp.html#ae48807fa2b7000afae599e67f327545e">gcd</a>(120, 7)) << std::endl;</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <span class="keywordflow">try</span> {</div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> std::cout << <span class="stringliteral">"gcd of -120,10 is "</span> << <a class="code hl_function" href="../../d4/d45/gcd__recursive__euclidean_8cpp.html#ae48807fa2b7000afae599e67f327545e">gcd</a>(-120, 10) << std::endl;</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> } <span class="keywordflow">catch</span> (<span class="keyword">const</span> std::domain_error &e) {</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> std::cout << <span class="stringliteral">"Error handling was successful"</span> << std::endl;</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> }</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> std::cout << <span class="stringliteral">"gcd of 312,221 is "</span> << (<a class="code hl_function" href="../../d4/d45/gcd__recursive__euclidean_8cpp.html#ae48807fa2b7000afae599e67f327545e">gcd</a>(312, 221)) << std::endl;</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> std::cout << <span class="stringliteral">"gcd of 289,204 is "</span> << (<a class="code hl_function" href="../../d4/d45/gcd__recursive__euclidean_8cpp.html#ae48807fa2b7000afae599e67f327545e">gcd</a>(289, 204)) << std::endl;</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span>}</div>
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</div>
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<div class="ttc" id="agcd__recursive__euclidean_8cpp_html_ae48807fa2b7000afae599e67f327545e"><div class="ttname"><a href="../../d4/d45/gcd__recursive__euclidean_8cpp.html#ae48807fa2b7000afae599e67f327545e">gcd</a></div><div class="ttdeci">int gcd(int num1, int num2)</div><div class="ttdef"><b>Definition</b> <a href="#l00014">gcd_recursive_euclidean.cpp:14</a></div></div>
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<div class="ttc" id="agcd__recursive__euclidean_8cpp_html_ae66f6b31b5ad750f1fe042a706a4e3d4"><div class="ttname"><a href="../../d4/d45/gcd__recursive__euclidean_8cpp.html#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a></div><div class="ttdeci">int main()</div><div class="ttdef"><b>Definition</b> <a href="#l00042">gcd_recursive_euclidean.cpp:42</a></div></div>
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