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
a2ddeffa2dbe9854d9fc4a63122055ac38a074e4
C-Plus-Plus/d4/de8/fast__interger__input_8cpp.html
github-actions a2ddeffa2d Documentation for a48d05fb62
2020-06-21 17:43:25 +00:00

212 lines
14 KiB
HTML
Raw Blame History

<!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">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.18"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>Algorithms_in_C++: others/fast_interger_input.cpp File Reference</title>
<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>
<link href="../../navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="../../resize.js"></script>
<script type="text/javascript" src="../../navtreedata.js"></script>
<script type="text/javascript" src="../../navtree.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/x-mathjax-config">
MathJax.Hub.Config({
extensions: ["tex2jax.js", "TeX/AMSmath.js", "TeX/AMSsymbols.js"],
jax: ["input/TeX","output/HTML-CSS"],
});
</script>
<script type="text/javascript" async="async" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.7/MathJax.js?config=TeX-MML-AM_CHTML/MathJax.js"></script>
<link href="../../doxygen.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 style="height: 56px;">
<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">Algorithms_in_C++
&#160;<span id="projectnumber">1.0.0</span>
</div>
<div id="projectbrief">Set of algorithms implemented in C++.</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.18 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
var searchBox = new SearchBox("searchBox", "../../search",false,'Search');
/* @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:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(function() {
initMenu('../../',true,false,'search.php','Search');
$(document).ready(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:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(document).ready(function(){initNavTree('d4/de8/fast__interger__input_8cpp.html','../../'); initResizable(); });
/* @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">
<iframe src="javascript:void(0)" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<div class="header">
<div class="summary">
<a href="#func-members">Functions</a> </div>
<div class="headertitle">
<div class="title">fast_interger_input.cpp File Reference</div> </div>
</div><!--header-->
<div class="contents">
<p>Read integers from stdin continuously as they are entered without waiting for the <code>\n</code> character.
<a href="#details">More...</a></p>
<div class="textblock"><code>#include &lt;iostream&gt;</code><br />
</div><div class="textblock"><div class="dynheader">
Include dependency graph for fast_interger_input.cpp:</div>
<div class="dyncontent">
<div class="center"><iframe scrolling="no" frameborder="0" src="../../d1/dda/fast__interger__input_8cpp__incl.svg" width="146" height="127"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe>
</div>
</div>
</div><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a4e097ac8509b717bdc8ab09ecd86ae82"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/de8/fast__interger__input_8cpp.html#a4e097ac8509b717bdc8ab09ecd86ae82">fastinput</a> (int *number)</td></tr>
<tr class="separator:a4e097ac8509b717bdc8ab09ecd86ae82"><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="../../d4/de8/fast__interger__input_8cpp.html#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>Read integers from stdin continuously as they are entered without waiting for the <code>\n</code> character. </p>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="a4e097ac8509b717bdc8ab09ecd86ae82"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4e097ac8509b717bdc8ab09ecd86ae82">&#9670;&nbsp;</a></span>fastinput()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void fastinput </td>
<td>(</td>
<td class="paramtype">int *&#160;</td>
<td class="paramname"><em>number</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Function to read the number from stdin. The function reads input until a non numeric character is entered. </p>
<div class="fragment"><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160; {</div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160; <span class="comment">// variable to indicate sign of input integer</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160; <span class="keywordtype">bool</span> negative = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160; <span class="keyword">register</span> <span class="keywordtype">int</span> c;</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160; *number = 0;</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160; </div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160; <span class="comment">// extract current character from buffer</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160; c = <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/c/getchar.html">std::getchar</a>();</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; <span class="keywordflow">if</span> (c == <span class="charliteral">&#39;-&#39;</span>) {</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160; <span class="comment">// number is negative</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160; negative = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160; </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160; <span class="comment">// extract the next character from the buffer</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; c = <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/c/getchar.html">std::getchar</a>();</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; }</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; </div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160; <span class="comment">// Keep on extracting characters if they are integers</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; <span class="comment">// i.e ASCII Value lies from &#39;0&#39;(48) to &#39;9&#39; (57)</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; <span class="keywordflow">for</span> (; (c &gt; 47 &amp;&amp; c &lt; 58); c = <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/c/getchar.html">std::getchar</a>())</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; *number = *number * 10 + c - 48;</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; </div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; <span class="comment">// if scanned input has a negative sign, negate the</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; <span class="comment">// value of the input number</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; <span class="keywordflow">if</span> (negative)</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; *(number) *= -1;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;}</div>
</div><!-- fragment -->
</div>
</div>
<a id="ae66f6b31b5ad750f1fe042a706a4e3d4"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae66f6b31b5ad750f1fe042a706a4e3d4">&#9670;&nbsp;</a></span>main()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int main </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Main function </p>
<div class="fragment"><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; {</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="keywordtype">int</span> number;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; <a class="code" href="../../d4/de8/fast__interger__input_8cpp.html#a4e097ac8509b717bdc8ab09ecd86ae82">fastinput</a>(&amp;number);</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; number &lt;&lt; <a class="codeRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;}</div>
</div><!-- fragment --><div class="dynheader">
Here is the call graph for this function:</div>
<div class="dyncontent">
<div class="center"><iframe scrolling="no" frameborder="0" src="../../d4/de8/fast__interger__input_8cpp_ae66f6b31b5ad750f1fe042a706a4e3d4_cgraph.svg" width="182" height="88"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe>
</div>
</div>
</div>
</div>
</div><!-- contents -->
</div><!-- doc-content -->
<div class="ttc" id="abasic_ostream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a></div></div>
<div class="ttc" id="aendl_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a></div><div class="ttdeci">T endl(T... args)</div></div>
<div class="ttc" id="agetchar_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/c/getchar.html">std::getchar</a></div><div class="ttdeci">T getchar(T... args)</div></div>
<div class="ttc" id="afast__interger__input_8cpp_html_a4e097ac8509b717bdc8ab09ecd86ae82"><div class="ttname"><a href="../../d4/de8/fast__interger__input_8cpp.html#a4e097ac8509b717bdc8ab09ecd86ae82">fastinput</a></div><div class="ttdeci">void fastinput(int *number)</div><div class="ttdef"><b>Definition:</b> fast_interger_input.cpp:11</div></div>
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
<ul>
<li class="navelem"><a class="el" href="../../dir_9510827d0b234b3cc54b29892f217477.html">others</a></li><li class="navelem"><a class="el" href="../../d4/de8/fast__interger__input_8cpp.html">fast_interger_input.cpp</a></li>
<li class="footer">Generated on Sun Jun 21 2020 17:42:19 for Algorithms_in_C++ by
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="../../doxygen.png" alt="doxygen"/></a> 1.8.18 </li>
</ul>
</div>
</body>
</html>
Reference in New Issue View Git Blame Copy Permalink