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<!DOCTYPE html>
<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
<head><meta http-equiv="x-ua-compatible" content="ie=edge">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>&#36923;&#36753;&#36816;&#31639;&#31526;</title>
<link rel="stylesheet" href="ext.css" />
<link rel="stylesheet" href="site_modules.css" />
</head>
<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-c_language_operator_logical skin-cppreference2 action-view cpp-navbar">
<div id="cpp-content-base">
<div id="content"><a id="top"></a>
<h1 id="firstHeading" class="firstHeading">&#36923;&#36753;&#36816;&#31639;&#31526;</h1>
<div id="bodyContent">
<div id="contentSub"><span class="subpages">&lt; <a href="c.html">c</a>&lrm; | <a href="c-language.html">language</a></span></div>
<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
<p>&#36923;&#36753;&#36816;&#31639;&#31526;&#24212;&#29992;&#26631;&#20934;&#24067;&#23572;&#20195;&#25968;&#36816;&#31639;&#21040;&#20854;&#36816;&#31639;&#25968;&#12290;</p>
<table class="wikitable" style="font-size:85%;">
<tr style="text-align:center">
<th>&#36816;&#31639;&#31526;</th>
<th>&#36816;&#31639;&#31526;&#21517;</th>
<th>&#31034;&#20363;</th>
<th>&#32467;&#26524;</th>
</tr>
<tr style="text-align:center">
<td><span class="t-c"><span class="mw-geshi c source-c"><span class="sy3">!</span></span></span></td>
<td>&#36923;&#36753;&#38750;</td>
<td><span class="t-c"><span class="mw-geshi c source-c"><span class="sy3">!</span>a</span></span></td>
<td><b>a</b> &#30340;&#36923;&#36753;&#21542;&#23450;</td>
</tr>
<tr style="text-align:center">
<td><span class="t-c"><span class="mw-geshi c source-c"><span class="sy3">&amp;&amp;</span></span></span></td>
<td>&#36923;&#36753;&#19982;</td>
<td><span class="t-c"><span class="mw-geshi c source-c">a <span class="sy3">&amp;&amp;</span> b</span></span></td>
<td><b>a</b> &#19982; <b>b</b> &#30340;&#36923;&#36753;&#19982;</td>
</tr>
<tr style="text-align:center">
<td><span class="t-c"><span class="mw-geshi c source-c"><span class="sy3">||</span></span></span></td>
<td>&#36923;&#36753;&#25110;</td>
<td><span class="t-c"><span class="mw-geshi c source-c">a <span class="sy3">||</span> b</span></span></td>
<td><b>a</b> &#19982; <b>b</b> &#30340;&#36923;&#36753;&#25110;</td>
</tr>
</table>
<h3><span class="mw-headline" id=".E9.80.BB.E8.BE.91.E9.9D.9E">&#36923;&#36753;&#38750;</span></h3>
<p>&#36923;&#36753;&#38750;&#36816;&#31639;&#31526;&#25317;&#26377;&#24418;&#24335;</p>
<table class="t-sdsc-begin">
<tr>
<td colspan="10" class="t-sdsc-sep"></td>
</tr>
<tr class="t-sdsc">
<td class="t-sdsc-nopad"><code><b>!</b></code> <span class="t-spar">expression</span></td>
<td class="t-sdsc-nopad"></td>
<td class="t-sdsc-nopad"></td>
</tr>
<tr>
<td colspan="10" class="t-sdsc-sep"></td>
</tr>
</table>
<p>&#20854;&#20013;</p>
<table class="t-par-begin">
<tr class="t-par">
<td><span class="t-spar">expression</span></td>
<td>-</td>
<td>&#25317;&#26377;&#20219;&#20309;<a href="c-language-type.html#.E7.B1.BB.E5.9E.8B.E7.BB.84.E5.88.AB" class="mw-redirect">&#26631;&#37327;&#31867;&#22411;</a>&#30340;&#34920;&#36798;&#24335;</td>
</tr>
</table>
<p>&#36923;&#36753;&#38750;&#36816;&#31639;&#31526;&#25317;&#26377; <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">int</span></span></span> &#31867;&#22411;&#12290;&#33509; <span class="t-spar">expression</span> &#27714;&#20540;&#20026;&#19981;&#31561;&#20110;&#38646;&#30340;&#25972;&#25968;&#21017;&#20854;&#20540;&#20026; <span class="t-c"><span class="mw-geshi c source-c">&#8203;<span class="nu0">0</span>&#8203;</span></span> &#12290;&#33509; <span class="t-spar">expression</span> &#27714;&#20540;&#20026;&#31561;&#20110;&#38646;&#30340;&#25972;&#25968;&#21017;&#20854;&#20540;&#20026; <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> &#12290;&#65288;&#25925; <span class="t-c"><span class="mw-geshi c source-c"><span class="sy3">!</span>E</span></span> &#19982; {{c|(0==E)} &#30456;&#21516;&#65289;</p>
<div class="t-example">
<div class="t-example-live-link"></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="c source-c">
<pre class="de1"><span class="co2">#include &lt;stdbool.h&gt;</span>
<span class="co2">#include &lt;stdio.h&gt;</span>
<span class="co2">#include &lt;ctype.h&gt;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
bool b <span class="sy1">=</span> <span class="sy3">!</span><span class="br0">(</span><span class="nu0">2</span><span class="sy2">+</span><span class="nu0">2</span> <span class="sy1">==</span> <span class="nu0">4</span><span class="br0">)</span><span class="sy4">;</span> <span class="co1">// &#38750; true</span>
<a href="c-io-fprintf.html"><span class="kw851">printf</span></a><span class="br0">(</span><span class="st0">&quot;!(2+2==4) = %s<span class="es1">\n</span>&quot;</span>, b <span class="sy4">?</span> <span class="st0">&quot;true&quot;</span> <span class="sy4">:</span> <span class="st0">&quot;false&quot;</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw4">int</span> n <span class="sy1">=</span> <a href="c-string-byte-isspace.html"><span class="kw534">isspace</span></a><span class="br0">(</span><span class="st0">&#39;a&#39;</span><span class="br0">)</span><span class="sy4">;</span> <span class="co1">// &#33509; &#39;a&#39; &#31354;&#26684;&#21017;&#20026;&#38646;&#65292;&#21542;&#21017;&#20026;&#38750;&#38646;</span>
<span class="kw4">int</span> x <span class="sy1">=</span> <span class="sy3">!!</span>n<span class="sy4">;</span> <span class="co1">// &quot;bang-bang&quot; &#65292;&#24120;&#29992;&#30340; C &#25163;&#27861;&#65292;&#26144;&#23556;&#26631;&#37327;&#20026; [0,1]</span>
<span class="co1">// &#65288;&#25152;&#26377;&#38750;&#38646;&#20540;&#21464;&#20026; 1 &#65289;</span>
<span class="kw4">char</span> <span class="sy2">*</span>a<span class="br0">[</span><span class="nu0">2</span><span class="br0">]</span> <span class="sy1">=</span> <span class="br0">{</span><span class="st0">&quot;nonspace&quot;</span>, <span class="st0">&quot;space&quot;</span><span class="br0">}</span><span class="sy4">;</span>
<a href="c-io-fprintf.html"><span class="kw851">printf</span></a><span class="br0">(</span><span class="st0">&quot;%s<span class="es1">\n</span>&quot;</span>, a<span class="br0">[</span>x<span class="br0">]</span><span class="br0">)</span><span class="sy4">;</span> <span class="co1">// &#29616;&#22312;&#33021;&#23433;&#20840;&#22320;&#20197; x &#20026; 2 &#20010; int &#30340;&#25968;&#32452;&#30340;&#19979;&#26631;</span>
<span class="br0">}</span></pre></div>
</div>
<p>&#36755;&#20986;&#65306;</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="text source-text">
<pre class="de1">!(2+2==4) = false
nonspace</pre></div>
</div>
</div>
<h3><span class="mw-headline" id=".E9.80.BB.E8.BE.91.E4.B8.8E">&#36923;&#36753;&#19982;</span></h3>
<p>&#36923;&#36753;&#19982;&#34920;&#36798;&#24335;&#25317;&#26377;&#24418;&#24335;</p>
<table class="t-sdsc-begin">
<tr>
<td colspan="10" class="t-sdsc-sep"></td>
</tr>
<tr class="t-sdsc">
<td class="t-sdsc-nopad"><span class="t-spar">lhs</span> <code><b>&amp;&amp;</b></code> <span class="t-spar">rhs</span></td>
<td class="t-sdsc-nopad"></td>
<td class="t-sdsc-nopad"></td>
</tr>
<tr>
<td colspan="10" class="t-sdsc-sep"></td>
</tr>
</table>
<p>&#20854;&#20013;</p>
<table class="t-par-begin">
<tr class="t-par">
<td><span class="t-spar">lhs</span></td>
<td>-</td>
<td>&#25317;&#26377;&#20219;&#20309;&#26631;&#37327;&#31867;&#22411;&#30340;&#34920;&#36798;&#24335;</td>
</tr>
<tr class="t-par">
<td><span class="t-spar">rhs</span></td>
<td>-</td>
<td>&#25317;&#26377;&#20219;&#20309;&#26631;&#37327;&#31867;&#22411;&#30340;&#34920;&#36798;&#24335;&#65292;&#20165;&#33509; <span class="t-spar">lhs</span> &#27604;&#36739;&#19981;&#31561;&#20110; <span class="t-c"><span class="mw-geshi c source-c">&#8203;<span class="nu0">0</span>&#8203;</span></span> &#25165;&#27714;&#20540;</td>
</tr>
</table>
<p>&#36923;&#36753;&#19982;&#36816;&#31639;&#31526;&#25317;&#26377; <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">int</span></span></span> &#31867;&#22411;&#65292;&#32780;&#33509; <span class="t-spar">lhs</span> &#19982; <span class="t-spar">rhs</span> &#37117;&#27604;&#36739;&#19981;&#31561;&#20110;&#38646;&#21017;&#25317;&#26377;&#20540; <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> &#12290;&#21542;&#21017;&#25317;&#26377;&#20540; <span class="t-c"><span class="mw-geshi c source-c">&#8203;<span class="nu0">0</span>&#8203;</span></span> &#65288;&#33509; <span class="t-spar">lhs</span> &#25110; <span class="t-spar">rhs</span> &#20043;&#19968;&#25110;&#20004;&#32773;&#27604;&#36739;&#31561;&#20110;&#38646;&#65289;&#12290;</p>
<p>&#22312; <span class="t-spar">lhs</span> &#30340;&#27714;&#20540;&#21518;&#26377;<a href="c-language-eval_order.html">&#24207;&#21015;&#28857;</a>&#12290;&#33509; <span class="t-spar">lhs</span> &#30340;&#32467;&#26524;&#27604;&#36739;&#31561;&#20110;&#38646;&#65292;&#21017;&#23436;&#20840;&#19981;&#27714;&#20540; <span class="t-spar">rhs</span> &#65288;&#26159;&#35859;<i>&#30701;&#36335;&#27714;&#20540;</i>&#65289;&#12290;</p>
<div class="t-example">
<div class="t-example-live-link"></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="c source-c">
<pre class="de1"><span class="co2">#include &lt;stdbool.h&gt;</span>
<span class="co2">#include &lt;stdio.h&gt;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
bool b <span class="sy1">=</span> <span class="nu0">2</span><span class="sy2">+</span><span class="nu0">2</span><span class="sy1">==</span><span class="nu0">4</span> <span class="sy3">&amp;&amp;</span> <span class="nu0">2</span><span class="sy2">*</span><span class="nu0">2</span><span class="sy1">==</span><span class="nu0">4</span><span class="sy4">;</span> <span class="co1">// b == true</span>
<span class="nu0">1</span> <span class="sy1">&gt;</span> <span class="nu0">2</span> <span class="sy3">&amp;&amp;</span> <a href="c-io-puts.html"><span class="kw836">puts</span></a><span class="br0">(</span><span class="st0">&quot;this won&#39;t print&quot;</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw4">char</span> <span class="sy2">*</span>p <span class="sy1">=</span> <span class="st0">&quot;abc&quot;</span><span class="sy4">;</span>
<span class="kw1">if</span><span class="br0">(</span>p <span class="sy3">&amp;&amp;</span> <span class="sy2">*</span>p<span class="br0">)</span> <span class="co1">// &#24120;&#29992;&#30340; C &#25163;&#27861;&#65306;&#33509; p &#38750;&#31354; *&#19982;* &#33509; p &#19981;&#25351;&#21521;&#23383;&#31526;&#20018;&#23614;</span>
<span class="br0">{</span> <span class="co1">// &#65288;&#27880;&#24847;&#25308;&#30701;&#36335;&#27714;&#20540;&#25152;&#36176;&#65292;&#36825;&#19981;&#20250;&#35797;&#22270;&#35299;&#24341;&#29992;&#31354;&#25351;&#38024;&#65289;</span>
<span class="co1">// ... // &hellip;&hellip;&#28982;&#21518;&#20570;&#19968;&#20123;&#23383;&#31526;&#20018;&#22788;&#29702;</span>
<span class="br0">}</span>
<span class="br0">}</span></pre></div>
</div>
</div>
<h3><span class="mw-headline" id=".E9.80.BB.E8.BE.91.E6.88.96">&#36923;&#36753;&#25110;</span></h3>
<p>&#36923;&#36753;&#25110;&#34920;&#36798;&#24335;&#25317;&#26377;&#24418;&#24335;</p>
<table class="t-sdsc-begin">
<tr>
<td colspan="10" class="t-sdsc-sep"></td>
</tr>
<tr class="t-sdsc">
<td class="t-sdsc-nopad"><span class="t-spar">lhs</span> <code><b>||</b></code> <span class="t-spar">rhs</span></td>
<td class="t-sdsc-nopad"></td>
<td class="t-sdsc-nopad"></td>
</tr>
<tr>
<td colspan="10" class="t-sdsc-sep"></td>
</tr>
</table>
<p>&#20854;&#20013;</p>
<table class="t-par-begin">
<tr class="t-par">
<td><span class="t-spar">lhs</span></td>
<td>-</td>
<td>&#25317;&#26377;&#20219;&#20309;&#26631;&#37327;&#31867;&#22411;&#30340;&#34920;&#36798;&#24335;</td>
</tr>
<tr class="t-par">
<td><span class="t-spar">rhs</span></td>
<td>-</td>
<td>&#25317;&#26377;&#20219;&#20309;&#26631;&#37327;&#31867;&#22411;&#30340;&#34920;&#36798;&#24335;&#65292;&#20165;&#33509; <span class="t-spar">lhs</span> &#27604;&#36739;&#31561;&#20110; <span class="t-c"><span class="mw-geshi c source-c">&#8203;<span class="nu0">0</span>&#8203;</span></span> &#25165;&#27714;&#20540;</td>
</tr>
</table>
<p>&#36923;&#36753;&#25110;&#36816;&#31639;&#31526;&#25317;&#26377; <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">int</span></span></span> &#31867;&#22411;&#65292;&#32780;&#33509; <span class="t-spar">lhs</span> &#25110; <span class="t-spar">rhs</span> &#27604;&#36739;&#19981;&#31561;&#20110;&#38646;&#21017;&#25317;&#26377;&#20540; <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> &#12290;&#21542;&#21017;&#23427;&#25317;&#26377;&#20540; <span class="t-c"><span class="mw-geshi c source-c">&#8203;<span class="nu0">0</span>&#8203;</span></span> &#65288;&#33509; <span class="t-spar">lhs</span> &#19982; <span class="t-spar">rhs</span> &#37117;&#27604;&#36739;&#31561;&#20110;&#38646;&#65289;&#12289;</p>
<p>&#22312; <span class="t-spar">lhs</span> &#30340;&#27714;&#20540;&#21518;&#26377;<a href="c-language-eval_order.html">&#24207;&#21015;&#28857;</a>&#12290;&#33509; <span class="t-spar">lhs</span> &#30340;&#32467;&#26524;&#27604;&#36739;&#19981;&#31561;&#20110;&#38646;&#65292;&#21017;&#23436;&#20840;&#19981;&#27714;&#20540; <span class="t-spar">rhs</span> &#65288;&#26159;&#35859;<i>&#30701;&#36335;&#27714;&#20540;</i>&#65289;&#12290;</p>
<div class="t-example">
<div class="t-example-live-link"></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="c source-c">
<pre class="de1"><span class="co2">#include &lt;stdbool.h&gt;</span>
<span class="co2">#include &lt;stdio.h&gt;</span>
<span class="co2">#include &lt;string.h&gt;</span>
<span class="co2">#include &lt;errno.h&gt;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
bool b <span class="sy1">=</span> <span class="nu0">2</span><span class="sy2">+</span><span class="nu0">2</span> <span class="sy1">==</span> <span class="nu0">4</span> <span class="sy3">||</span> <span class="nu0">2</span><span class="sy2">+</span><span class="nu0">2</span> <span class="sy1">==</span> <span class="nu0">5</span><span class="sy4">;</span> <span class="co1">// true</span>
<a href="c-io-fprintf.html"><span class="kw851">printf</span></a><span class="br0">(</span><span class="st0">&quot;true or false = %s<span class="es1">\n</span>&quot;</span>, b <span class="sy4">?</span> <span class="st0">&quot;true&quot;</span> <span class="sy4">:</span> <span class="st0">&quot;false&quot;</span><span class="br0">)</span><span class="sy4">;</span>
<span class="co1">// &#36923;&#36753;&#25110;&#33021;&#20687; perl &#30340; &quot;or die&quot; &#19968;&#26679;&#20351;&#29992;&#65292;&#21482;&#35201; rhs &#25317;&#26377;&#26631;&#37327;&#31867;&#22411;</span>
<a href="c-io-fopen.html"><span class="kw819">fopen</span></a><span class="br0">(</span><span class="st0">&quot;test.txt&quot;</span>, <span class="st0">&quot;r&quot;</span><span class="br0">)</span> <span class="sy3">||</span> <a href="c-io-fprintf.html"><span class="kw851">printf</span></a><span class="br0">(</span><span class="st0">&quot;could not open test.txt: %s<span class="es1">\n</span>&quot;</span>, <a href="c-string-byte-strerror.html"><span class="kw574">strerror</span></a><span class="br0">(</span><span class="kw2">errno</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
</div>
<p>&#21487;&#33021;&#30340;&#36755;&#20986;&#65306;</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="text source-text">
<pre class="de1">true or false = true
could not open test.txt: No such file or directory</pre></div>
</div>
</div>
<h3><span class="mw-headline" id=".E5.BC.95.E7.94.A8">&#24341;&#29992;</span></h3>
<div class="t-ref-std-11">
<ul>
<li>C11 &#26631;&#20934;&#65288;ISO/IEC 9899:2011&#65289;&#65306;</li>
</ul>
<dl>
<dd>
<ul>
<li>6.5.3.3 Unary arithmetic operators (p: 89)</li>
</ul>
</dd>
</dl>
<dl>
<dd>
<ul>
<li>6.5.13 Logical AND operator (p: 99)</li>
</ul>
</dd>
</dl>
<dl>
<dd>
<ul>
<li>6.5.14 Logical OR operator (p: 99)</li>
</ul>
</dd>
</dl>
<div class="t-ref-std-c99">
<ul>
<li>C99 &#26631;&#20934;&#65288;ISO/IEC 9899:1999&#65289;&#65306;</li>
</ul>
<dl>
<dd>
<ul>
<li>6.5.3.3 Unary arithmetic operators (p: 79)</li>
</ul>
</dd>
</dl>
<dl>
<dd>
<ul>
<li>6.5.13 Logical AND operator (p: 89)</li>
</ul>
</dd>
</dl>
<dl>
<dd>
<ul>
<li>6.5.14 Logical OR operator (p: 89)</li>
</ul>
</dd>
</dl>
<div class="t-ref-std-c89">
<ul>
<li>C89/C90 &#26631;&#20934;&#65288;ISO/IEC 9899:1990&#65289;&#65306;</li>
</ul>
<dl>
<dd>
<ul>
<li>3.3.3.3 Unary arithmetic operators</li>
</ul>
</dd>
</dl>
<dl>
<dd>
<ul>
<li>3.3.13 Logical AND operator</li>
</ul>
</dd>
</dl>
<dl>
<dd>
<ul>
<li>3.3.14 Logical OR operator</li>
</ul>
</dd>
</dl>
</div>
<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
<p><a href="c-language-operator_precedence.html">&#36816;&#31639;&#31526;&#20248;&#20808;&#32423;</a></p>
<table class="wikitable">
<tr style="text-align:center">
<th colspan="7">&#24120;&#29992;&#36816;&#31639;&#31526;</th>
</tr>
<tr style="text-align:center">
<td><a href="c-language-operator_assignment.html">&#36171;&#20540;</a></td>
<td><a href="c-language-operator_incdec.html">&#33258;&#22686;<br />
&#33258;&#20943;</a></td>
<td><a href="c-language-operator_arithmetic.html">&#31639;&#26415;</a></td>
<td><strong class="selflink">&#36923;&#36753;</strong></td>
<td><a href="c-language-operator_comparison.html">&#27604;&#36739;</a></td>
<td><a href="c-language-operator_member_access.html">&#25104;&#21592;<br />
&#35775;&#38382;</a></td>
<td><a href="c-language-operator_other.html">&#20854;&#20182;</a></td>
</tr>
<tr style="text-align:center">
<td>
<p><span class="t-c"><span class="mw-geshi c source-c">a <span class="sy1">=</span> b<br />
a <span class="sy2">+</span><span class="sy1">=</span> b<br />
a <span class="sy2">-</span><span class="sy1">=</span> b<br />
a <span class="sy2">*</span><span class="sy1">=</span> b<br />
a <span class="sy2">/</span><span class="sy1">=</span> b<br />
a <span class="sy2">%</span><span class="sy1">=</span> b<br />
a <span class="sy3">&amp;</span><span class="sy1">=</span> b<br />
a <span class="sy3">|</span><span class="sy1">=</span> b<br />
a <span class="sy3">^</span><span class="sy1">=</span> b<br />
a <span class="sy1">&lt;&lt;=</span> b<br />
a <span class="sy1">&gt;&gt;=</span> b</span></span></p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi c source-c"><span class="sy2">++</span>a<br />
<span class="sy2">--</span>a<br />
a<span class="sy2">++</span><br />
a<span class="sy2">--</span></span></span></p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi c source-c"><span class="sy2">+</span>a<br />
<span class="sy2">-</span>a<br />
a <span class="sy2">+</span> b<br />
a <span class="sy2">-</span> b<br />
a <span class="sy2">*</span> b<br />
a <span class="sy2">/</span> b<br />
a <span class="sy2">%</span> b<br />
~a<br />
a <span class="sy3">&amp;</span> b<br />
a <span class="sy3">|</span> b<br />
a <span class="sy3">^</span> b<br />
a <span class="sy1">&lt;&lt;</span> b<br />
a <span class="sy1">&gt;&gt;</span> b</span></span></p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi c source-c"><span class="sy3">!</span>a<br />
a <span class="sy3">&amp;&amp;</span> b<br />
a <span class="sy3">||</span> b</span></span></p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi c source-c">a <span class="sy1">==</span> b<br />
a <span class="sy3">!</span><span class="sy1">=</span> b<br />
a <span class="sy1">&lt;</span> b<br />
a <span class="sy1">&gt;</span> b<br />
a <span class="sy1">&lt;=</span> b<br />
a <span class="sy1">&gt;=</span> b</span></span></p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi c source-c">a<span class="br0">[</span>b<span class="br0">]</span><br />
<span class="sy2">*</span>a<br />
<span class="sy3">&amp;</span>a<br />
a<span class="sy2">-</span><span class="sy1">&gt;</span>b<br />
a.<span class="me1">b</span></span></span></p>
</td>
<td>
<p><span class="t-c"><span class="mw-geshi c source-c">a<span class="br0">(</span>...<span class="br0">)</span><br />
a, b<br />
<span class="br0">(</span>type<span class="br0">)</span> a<br />
<span class="sy4">?</span> <span class="sy4">:</span><br />
<span class="kw4">sizeof</span><br />
_Alignof</span></span> <span class="t-mark-rev t-since-c11">(C11 &#36215;)</span></p>
</td>
</tr>
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