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hustoj/web/cppreference-zh/chmhelp/cpp-container-stack-top.html
klarkxy 196e706fe4 上传cppreference
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<!DOCTYPE html>
<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
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<title>std::stack&lt;T,Container&gt;::top</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::stack&lt;T,Container&gt;::</span>top</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-container.html">container</a>&lrm; | <a href="cpp-container-stack.html">stack</a></span></div>
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<div><span class="mw-geshi cpp source-cpp">reference top<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span></span></div>
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<div><span class="mw-geshi cpp source-cpp">const_reference top<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span></span></div>
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<p>&#36820;&#22238; stack &#20013;&#39030;&#20803;&#32032;&#30340;&#24341;&#29992;&#12290;&#23427;&#26159;&#26368;&#36817;&#25512;&#20837;&#30340;&#20803;&#32032;&#12290;&#27492;&#20803;&#32032;&#23558;&#22312;&#35843;&#29992; <span class="t-lc"><a href="cpp-container-stack-pop.html">pop()</a></span> &#26102;&#34987;&#31227;&#38500;&#12290;&#31561;&#25928;&#20110;&#35843;&#29992; <span class="t-c"><span class="mw-geshi cpp source-cpp">c.<span class="me1">back</span><span class="br0">(</span><span class="br0">)</span></span></span> &#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
<p>&#65288;&#26080;&#65289;</p>
<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">&#36820;&#22238;&#20540;</span></h3>
<p>&#21040;&#26411;&#23614;&#20803;&#32032;&#30340;&#24341;&#29992;</p>
<h3><span class="mw-headline" id=".E5.A4.8D.E6.9D.82.E5.BA.A6">&#22797;&#26434;&#24230;</span></h3>
<p>&#24120;&#25968;</p>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
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<div class="cpp source-cpp">
<pre class="de1"><span class="co2">#include &lt;stack&gt;</span>
<span class="co2">#include &lt;iostream&gt;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
<a href="cpp-container-stack.html"><span class="kw1297">std::<span class="me2">stack</span></span></a><span class="sy1">&lt;</span><span class="kw4">int</span><span class="sy1">&gt;</span> s<span class="sy4">;</span>
s.<span class="me1">push</span><span class="br0">(</span> <span class="nu0">2</span> <span class="br0">)</span><span class="sy4">;</span>
s.<span class="me1">push</span><span class="br0">(</span> <span class="nu0">6</span> <span class="br0">)</span><span class="sy4">;</span>
s.<span class="me1">push</span><span class="br0">(</span> <span class="nu0">51</span> <span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> s.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot; elements on stack<span class="es1">\n</span>&quot;</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;Top element: &quot;</span>
<span class="sy1">&lt;&lt;</span> s.<span class="me1">top</span><span class="br0">(</span><span class="br0">)</span> <span class="co1">// &#20445;&#30041;&#20803;&#32032;&#22312; stack &#19978;</span>
<span class="sy1">&lt;&lt;</span> <span class="st0">&quot;<span class="es1">\n</span>&quot;</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> s.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot; elements on stack<span class="es1">\n</span>&quot;</span><span class="sy4">;</span>
s.<span class="me1">pop</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> s.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot; elements on stack<span class="es1">\n</span>&quot;</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;Top element: &quot;</span> <span class="sy1">&lt;&lt;</span> s.<span class="me1">top</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;<span class="es1">\n</span>&quot;</span><span class="sy4">;</span>
<span class="kw1">return</span> <span class="nu0">0</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
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<p>&#36755;&#20986;&#65306;</p>
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<pre class="de1">3 elements on stack
Top element: 51
3 elements on stack
2 elements on stack
Top element: 6</pre></div>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
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<div><a href="cpp-container-stack-push.html"><span class="t-lines"><span>push</span></span></a></div>
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<td>&#21521;&#26632;&#39030;&#25554;&#20837;&#20803;&#32032;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><a href="cpp-container-stack-pop.html"><span class="t-lines"><span>pop</span></span></a></div>
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<td>&#21024;&#38500;&#26632;&#39030;&#20803;&#32032;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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