backup/C-Plus-Plus
1
0
Fork 0
mirror of https://github.com/TheAlgorithms/C-Plus-Plus.git synced 2026-03-21 20:31:43 +08:00
Code Issues Projects Releases Wiki Activity
Files
e7edde96abf000def3eb0618a4f9687e9037cc80
C-Plus-Plus/de/d47/string__fibonacci_8cpp.html
realstealthninja 14583a2f33 Documentation for c26eea874d
2025-05-19 11:38:33 +00:00

308 lines
19 KiB
HTML
Raw Blame History

<!-- HTML header for doxygen 1.12.0-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=11"/>
<meta name="generator" content="Doxygen 1.13.2"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>TheAlgorithms/C++: math/string_fibonacci.cpp File Reference</title>
<link rel="icon" href="../../favicon.svg" type="image/x-icon" />
<link href="../../tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="../../jquery.js"></script>
<script type="text/javascript" src="../../dynsections.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/@xpack-3rd-party/doxygen-awesome-css@2.2.0-1/doxygen-awesome-darkmode-toggle.js"></script>
<script type="text/javascript">
DoxygenAwesomeDarkModeToggle.init()
</script>
<script type="text/javascript" src="../../clipboard.js"></script>
<link href="../../navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="../../navtreedata.js"></script>
<script type="text/javascript" src="../../navtree.js"></script>
<script type="text/javascript" src="../../resize.js"></script>
<script type="text/javascript" src="../../cookie.js"></script>
<link href="../../search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="../../search/searchdata.js"></script>
<script type="text/javascript" src="../../search/search.js"></script>
<script type="text/javascript">
window.MathJax = {
options: {
ignoreHtmlClass: 'tex2jax_ignore',
processHtmlClass: 'tex2jax_process'
},
loader: {
load: ['[tex]/ams']
},
tex: {
macros: {},
packages: ['base','configmacros','ams']
}
};
</script>
<script type="text/javascript" id="MathJax-script" async="async" src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js"></script>
<link href="../../doxygen.css" rel="stylesheet" type="text/css" />
<link href="../../doxygen-awesome.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr id="projectrow">
<td id="projectlogo"><img alt="Logo" src="../../project_logo.png"/></td>
<td id="projectalign">
<div id="projectname">TheAlgorithms/C++<span id="projectnumber">&#160;1.0.0</span>
</div>
<div id="projectbrief">All the algorithms implemented in C++</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.13.2 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
var searchBox = new SearchBox("searchBox", "../../search/",'.html');
/* @license-end */
</script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
$(function() { codefold.init(1); });
/* @license-end */
</script>
<script type="text/javascript" src="../../menudata.js"></script>
<script type="text/javascript" src="../../menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
$(function() {
initMenu('../../',true,false,'search.php','Search',true);
$(function() { init_search(); });
});
/* @license-end */
</script>
<div id="main-nav"></div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
<div id="nav-tree">
<div id="nav-tree-contents">
<div id="nav-sync" class="sync"></div>
</div>
</div>
<div id="splitbar" style="-moz-user-select:none;"
class="ui-resizable-handle">
</div>
</div>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
$(function(){initNavTree('de/d47/string__fibonacci_8cpp.html','../../'); initResizable(true); });
/* @license-end */
</script>
<div id="doc-content">
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<div id="MSearchResults">
<div class="SRPage">
<div id="SRIndex">
<div id="SRResults"></div>
<div class="SRStatus" id="Loading">Loading...</div>
<div class="SRStatus" id="Searching">Searching...</div>
<div class="SRStatus" id="NoMatches">No Matches</div>
</div>
</div>
</div>
</div>
<div class="header">
<div class="summary">
<a href="#func-members">Functions</a> </div>
<div class="headertitle"><div class="title">string_fibonacci.cpp File Reference</div></div>
</div><!--header-->
<div class="contents">
<p>This Programme returns the Nth fibonacci as a string.
<a href="#details">More...</a></p>
<div class="textblock"><code>#include &lt;cstdint&gt;</code><br />
<code>#include &lt;iostream&gt;</code><br />
<code>#include &lt;cstring&gt;</code><br />
</div><div class="textblock"><div class="dynheader">
Include dependency graph for string_fibonacci.cpp:</div>
<div class="dyncontent">
<div class="center"><iframe scrolling="no" frameborder="0" src="../../d0/da1/string__fibonacci_8cpp__incl.svg" width="250" height="111"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
</div>
</div>
<p><a href="../../de/d47/string__fibonacci_8cpp_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a28052eee05d43c2ebc5147c52bd50c35" id="r_a28052eee05d43c2ebc5147c52bd50c35"><td class="memItemLeft" align="right" valign="top">std::string&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a28052eee05d43c2ebc5147c52bd50c35">add</a> (std::string a, std::string b)</td></tr>
<tr class="separator:a28052eee05d43c2ebc5147c52bd50c35"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad8055ee368a5d5b24de01bdde6bf8fca" id="r_ad8055ee368a5d5b24de01bdde6bf8fca"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ad8055ee368a5d5b24de01bdde6bf8fca">fib_Accurate</a> (uint64_t n)</td></tr>
<tr class="separator:ad8055ee368a5d5b24de01bdde6bf8fca"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae66f6b31b5ad750f1fe042a706a4e3d4" id="r_ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ae66f6b31b5ad750f1fe042a706a4e3d4">main</a> ()</td></tr>
<tr class="separator:ae66f6b31b5ad750f1fe042a706a4e3d4"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>This Programme returns the Nth fibonacci as a string. </p>
<p>The method used is manual addition with carry and placing it in a string which is called string addition This makes it have no bounds or limits</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="../../de/de4/fibonacci__large_8cpp.html" title="Computes N^th Fibonacci number given as input argument. Uses custom build arbitrary integers library ...">fibonacci_large.cpp</a>, <a class="el" href="../../d4/d32/fibonacci__fast_8cpp.html" title="Faster computation of Fibonacci series.">fibonacci_fast.cpp</a>, <a class="el" href="../../d9/d89/fibonacci_8cpp.html" title="n-th Fibonacci number.">fibonacci.cpp</a> </dd></dl>
<p class="definition">Definition in file <a class="el" href="../../de/d47/string__fibonacci_8cpp_source.html">string_fibonacci.cpp</a>.</p>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="a28052eee05d43c2ebc5147c52bd50c35" name="a28052eee05d43c2ebc5147c52bd50c35"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a28052eee05d43c2ebc5147c52bd50c35">&#9670;&#160;</a></span>add()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">std::string add </td>
<td>(</td>
<td class="paramtype">std::string</td> <td class="paramname"><span class="paramname"><em>a</em></span>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">std::string</td> <td class="paramname"><span class="paramname"><em>b</em></span>&#160;)</td>
</tr>
</table>
</div><div class="memdoc">
<p>function to add two string numbers </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">a</td><td>first number in string to add </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">b</td><td>second number in string to add </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>sum as a std::string </dd></dl>
<p class="definition">Definition at line <a class="el" href="../../de/d47/string__fibonacci_8cpp_source.html#l00025">25</a> of file <a class="el" href="../../de/d47/string__fibonacci_8cpp_source.html">string_fibonacci.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 25</span> {</div>
<div class="line"><span class="lineno"> 26</span> std::string temp = <span class="stringliteral">&quot;&quot;</span>;</div>
<div class="line"><span class="lineno"> 27</span> </div>
<div class="line"><span class="lineno"> 28</span> <span class="comment">// carry flag</span></div>
<div class="line"><span class="lineno"> 29</span> <span class="keywordtype">int</span> carry = 0;</div>
<div class="line"><span class="lineno"> 30</span> </div>
<div class="line"><span class="lineno"> 31</span> <span class="comment">// fills up with zeros</span></div>
<div class="line"><span class="lineno"> 32</span> <span class="keywordflow">while</span> (a.length() &lt; b.length()) {</div>
<div class="line"><span class="lineno"> 33</span> a = <span class="stringliteral">&quot;0&quot;</span> + a;</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="comment">// fills up with zeros</span></div>
<div class="line"><span class="lineno"> 37</span> <span class="keywordflow">while</span> (b.length() &lt; a.length()) {</div>
<div class="line"><span class="lineno"> 38</span> b = <span class="stringliteral">&quot;0&quot;</span> + b;</div>
<div class="line"><span class="lineno"> 39</span> }</div>
<div class="line"><span class="lineno"> 40</span> </div>
<div class="line"><span class="lineno"> 41</span> <span class="comment">// adds the numbers a and b</span></div>
<div class="line"><span class="lineno"> 42</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = a.length() - 1; i &gt;= 0; i--) {</div>
<div class="line"><span class="lineno"> 43</span> <span class="keywordtype">char</span> val = <span class="keyword">static_cast&lt;</span><span class="keywordtype">char</span><span class="keyword">&gt;</span>(((a[i] - 48) + (b[i] - 48)) + 48 + carry);</div>
<div class="line"><span class="lineno"> 44</span> <span class="keywordflow">if</span> (val &gt; 57) {</div>
<div class="line"><span class="lineno"> 45</span> carry = 1;</div>
<div class="line"><span class="lineno"> 46</span> val -= 10;</div>
<div class="line"><span class="lineno"> 47</span> } <span class="keywordflow">else</span> {</div>
<div class="line"><span class="lineno"> 48</span> carry = 0;</div>
<div class="line"><span class="lineno"> 49</span> }</div>
<div class="line"><span class="lineno"> 50</span> temp = val + temp;</div>
<div class="line"><span class="lineno"> 51</span> }</div>
<div class="line"><span class="lineno"> 52</span> </div>
<div class="line"><span class="lineno"> 53</span> <span class="comment">// processes the carry flag</span></div>
<div class="line"><span class="lineno"> 54</span> <span class="keywordflow">if</span> (carry == 1) {</div>
<div class="line"><span class="lineno"> 55</span> temp = <span class="stringliteral">&quot;1&quot;</span> + temp;</div>
<div class="line"><span class="lineno"> 56</span> }</div>
<div class="line"><span class="lineno"> 57</span> </div>
<div class="line"><span class="lineno"> 58</span> <span class="comment">// removes leading zeros.</span></div>
<div class="line"><span class="lineno"> 59</span> <span class="keywordflow">while</span> (temp[0] == <span class="charliteral">&#39;0&#39;</span> &amp;&amp; temp.length() &gt; 1) {</div>
<div class="line"><span class="lineno"> 60</span> temp = temp.substr(1);</div>
<div class="line"><span class="lineno"> 61</span> }</div>
<div class="line"><span class="lineno"> 62</span> </div>
<div class="line"><span class="lineno"> 63</span> <span class="keywordflow">return</span> temp;</div>
<div class="line"><span class="lineno"> 64</span>}</div>
</div><!-- fragment -->
</div>
</div>
<a id="ad8055ee368a5d5b24de01bdde6bf8fca" name="ad8055ee368a5d5b24de01bdde6bf8fca"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad8055ee368a5d5b24de01bdde6bf8fca">&#9670;&#160;</a></span>fib_Accurate()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void fib_Accurate </td>
<td>(</td>
<td class="paramtype">uint64_t</td> <td class="paramname"><span class="paramname"><em>n</em></span></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Fibonacci iterator </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in]</td><td class="paramname">n</td><td>n^th Fibonacci number </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="../../de/d47/string__fibonacci_8cpp_source.html#l00069">69</a> of file <a class="el" href="../../de/d47/string__fibonacci_8cpp_source.html">string_fibonacci.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 69</span> {</div>
<div class="line"><span class="lineno"> 70</span> std::string tmp = <span class="stringliteral">&quot;&quot;</span>;</div>
<div class="line"><span class="lineno"> 71</span> std::string fibMinus1 = <span class="stringliteral">&quot;1&quot;</span>;</div>
<div class="line"><span class="lineno"> 72</span> std::string fibMinus2 = <span class="stringliteral">&quot;0&quot;</span>;</div>
<div class="line"><span class="lineno"> 73</span> <span class="keywordflow">for</span> (uint64_t i = 0; i &lt; n; i++) {</div>
<div class="line"><span class="lineno"> 74</span> tmp = <a class="code hl_function" href="#a28052eee05d43c2ebc5147c52bd50c35">add</a>(fibMinus1, fibMinus2);</div>
<div class="line"><span class="lineno"> 75</span> fibMinus2 = fibMinus1;</div>
<div class="line"><span class="lineno"> 76</span> fibMinus1 = tmp;</div>
<div class="line"><span class="lineno"> 77</span> }</div>
<div class="line"><span class="lineno"> 78</span> std::cout &lt;&lt; fibMinus2;</div>
<div class="line"><span class="lineno"> 79</span>}</div>
<div class="ttc" id="astring__fibonacci_8cpp_html_a28052eee05d43c2ebc5147c52bd50c35"><div class="ttname"><a href="#a28052eee05d43c2ebc5147c52bd50c35">add</a></div><div class="ttdeci">std::string add(std::string a, std::string b)</div><div class="ttdef"><b>Definition</b> <a href="../../de/d47/string__fibonacci_8cpp_source.html#l00025">string_fibonacci.cpp:25</a></div></div>
</div><!-- fragment -->
</div>
</div>
<a id="ae66f6b31b5ad750f1fe042a706a4e3d4" name="ae66f6b31b5ad750f1fe042a706a4e3d4"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae66f6b31b5ad750f1fe042a706a4e3d4">&#9670;&#160;</a></span>main()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int main </td>
<td>(</td>
<td class="paramtype">void</td> <td class="paramname"><span class="paramname"><em></em></span></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>main function </p>
<p class="definition">Definition at line <a class="el" href="../../de/d47/string__fibonacci_8cpp_source.html#l00082">82</a> of file <a class="el" href="../../de/d47/string__fibonacci_8cpp_source.html">string_fibonacci.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 82</span> {</div>
<div class="line"><span class="lineno"> 83</span> <span class="keywordtype">int</span> n;</div>
<div class="line"><span class="lineno"> 84</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Enter whatever number N you want to find the fibonacci of\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 85</span> std::cin &gt;&gt; n;</div>
<div class="line"><span class="lineno"> 86</span> std::cout &lt;&lt; n &lt;&lt; <span class="stringliteral">&quot; th Fibonacci is \n&quot;</span>;</div>
<div class="line"><span class="lineno"> 87</span> <a class="code hl_function" href="#ad8055ee368a5d5b24de01bdde6bf8fca">fib_Accurate</a>(n);</div>
<div class="line"><span class="lineno"> 88</span> </div>
<div class="line"><span class="lineno"> 89</span> <span class="keywordflow">return</span> 0;</div>
<div class="line"><span class="lineno"> 90</span>}</div>
<div class="ttc" id="astring__fibonacci_8cpp_html_ad8055ee368a5d5b24de01bdde6bf8fca"><div class="ttname"><a href="#ad8055ee368a5d5b24de01bdde6bf8fca">fib_Accurate</a></div><div class="ttdeci">void fib_Accurate(uint64_t n)</div><div class="ttdef"><b>Definition</b> <a href="../../de/d47/string__fibonacci_8cpp_source.html#l00069">string_fibonacci.cpp:69</a></div></div>
</div><!-- fragment -->
</div>
</div>
</div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
<ul>
<li class="navelem"><a class="el" href="../../dir_296d53ceaeaa7e099814a6def439fe8a.html">math</a></li><li class="navelem"><a class="el" href="../../de/d47/string__fibonacci_8cpp.html">string_fibonacci.cpp</a></li>
<li class="footer">Generated by <a href="https://www.doxygen.org/index.html"><img class="footer" src="../../doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.13.2 </li>
</ul>
</div>
</body>
</html>
Reference in New Issue View Git Blame Copy Permalink