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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>div, <span style="font-size:0.7em; line-height:130%">std::</span>ldiv, <span style="font-size:0.7em; line-height:130%">std::</span>lldiv</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-numeric.html">numeric</a>&lrm; | <a href="cpp-numeric-math.html">math</a></span></div>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code><a href="cpp-header-cstdlib.html">&lt;cstdlib&gt;</a></code></div>
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<div><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">div_t</span> &nbsp; &nbsp; div<span class="br0">(</span> <span class="kw4">int</span> x, <span class="kw4">int</span> y <span class="br0">)</span><span class="sy4">;</span></span></div>
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<div><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">ldiv_t</span> &nbsp; &nbsp;div<span class="br0">(</span> <span class="kw4">long</span> x, <span class="kw4">long</span> y <span class="br0">)</span><span class="sy4">;</span></span></div>
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<div><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">lldiv_t</span> &nbsp; div<span class="br0">(</span> <span class="kw4">long</span> <span class="kw4">long</span> x, <span class="kw4">long</span> <span class="kw4">long</span> y <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<div><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">ldiv_t</span> &nbsp; ldiv<span class="br0">(</span> <span class="kw4">long</span> x, <span class="kw4">long</span> y <span class="br0">)</span><span class="sy4">;</span></span></div>
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<div><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">lldiv_t</span> lldiv<span class="br0">(</span> <span class="kw4">long</span> <span class="kw4">long</span> x, <span class="kw4">long</span> <span class="kw4">long</span> y <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code><a href="cpp-header-cinttypes.html">&lt;cinttypes&gt;</a></code></div>
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<div><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">imaxdiv_t</span> div<span class="br0">(</span> <a href="cpp-types-integer.html"><span class="kw118">std::<span class="me2">intmax_t</span></span></a> x, <a href="cpp-types-integer.html"><span class="kw118">std::<span class="me2">intmax_t</span></span></a> y <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td>(6)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<div><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">imaxdiv_t</span> imaxdiv<span class="br0">(</span> <a href="cpp-types-integer.html"><span class="kw118">std::<span class="me2">intmax_t</span></span></a> x, <a href="cpp-types-integer.html"><span class="kw118">std::<span class="me2">intmax_t</span></span></a> y <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td>(7)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<p>&#35745;&#31639;&#20998;&#23376; <code>x</code> &#38500;&#20197;&#20998;&#27597; <code>y</code> &#30340;&#21830;&#21644;&#20313;&#25968;&#12290;</p>
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<p><code>&lt;cinttypes&gt;</code> &#20013;&#25552;&#20379; <code>std::div</code> &#23545; <code>std::intmax_t</code> &#30340;&#37325;&#36733;&#65292;&#24403;&#19988;&#20165;&#24403; <code>std::intmax_t</code> &#20026;&#25193;&#23637;&#25972;&#25968;&#31867;&#22411;&#12290;</p>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<p>&#21830;&#26159;&#33293;&#24323;&#20219;&#20309;&#23567;&#25968;&#37096;&#20998;&#65288;&#21521;&#38646;&#25130;&#26029;&#65289;&#30340;&#20195;&#25968;&#21830;&#12290;&#20313;&#25968;&#28385;&#36275; <span class="t-c"><span class="mw-geshi cpp source-cpp">quot <span class="sy2">*</span> y <span class="sy2">+</span> rem <span class="sy1">==</span> x</span></span> &#12290;</p>
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<td><span class="t-mark-rev t-until-cxx11">(C++11 &#21069;)</span></td>
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<p>&#21830;&#26159;&#34920;&#36798;&#24335; <span class="t-c"><span class="mw-geshi cpp source-cpp">x<span class="sy2">/</span>y</span></span> &#30340;&#32467;&#26524;&#12290;&#20313;&#25968;&#26159;&#34920;&#36798;&#24335; <span class="t-c"><span class="mw-geshi cpp source-cpp">x<span class="sy2">%</span>y</span></span> &#30340;&#32467;&#26524;&#12290;</p>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
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<td>x, y</td>
<td>-</td>
<td>&#25972;&#25968;&#20540;</td>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">&#36820;&#22238;&#20540;</span></h3>
<p>&#33509;&#20313;&#25968;&#19982;&#19978;&#30342;&#33021;&#34920;&#31034;&#25104;&#23545;&#24212;&#31867;&#22411;&#65288;&#20998;&#21035;&#20026; int &#12289; long &#12289; long long &#12289; std::imaxdiv_t &#65289;&#30340;&#23545;&#35937;&#65292;&#21017;&#36820;&#22238;&#20316;&#20026;&#23450;&#20041;&#20110;&#19979;&#30340; <code>std::div_t</code> &#12289; <code>std::ldiv_t</code> &#12289; <code>std::lldiv_t</code> &#12289; <code>std::imaxdiv_t</code> &#31867;&#22411;&#23545;&#35937;&#30340;&#20108;&#32773;&#65306;</p>
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<h2><span class="mw-headline" id="std::div_t"><span style="font-size:0.7em; line-height:130%">std::</span>div_t</span></h2>
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<pre class="de1"><span class="kw1">struct</span> div_t <span class="br0">{</span> <span class="kw4">int</span> quot<span class="sy4">;</span> <span class="kw4">int</span> rem<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></pre></div>
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<p>&#25110;</p>
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<pre class="de1"><span class="kw1">struct</span> div_t <span class="br0">{</span> <span class="kw4">int</span> rem<span class="sy4">;</span> <span class="kw4">int</span> quot<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></pre></div>
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<h2><span class="mw-headline" id="std::ldiv_t"><span style="font-size:0.7em; line-height:130%">std::</span>ldiv_t</span></h2>
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<pre class="de1"><span class="kw1">struct</span> ldiv_t <span class="br0">{</span> <span class="kw4">long</span> quot<span class="sy4">;</span> <span class="kw4">long</span> rem<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></pre></div>
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<p>&#25110;</p>
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<pre class="de1"><span class="kw1">struct</span> ldiv_t <span class="br0">{</span> <span class="kw4">long</span> rem<span class="sy4">;</span> <span class="kw4">long</span> quot<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></pre></div>
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<h2><span class="mw-headline" id="std::lldiv_t"><span style="font-size:0.7em; line-height:130%">std::</span>lldiv_t</span></h2>
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<pre class="de1"><span class="kw1">struct</span> lldiv_t <span class="br0">{</span> <span class="kw4">long</span> <span class="kw4">long</span> quot<span class="sy4">;</span> <span class="kw4">long</span> <span class="kw4">long</span> rem<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></pre></div>
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<p>&#25110;</p>
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<pre class="de1"><span class="kw1">struct</span> lldiv_t <span class="br0">{</span> <span class="kw4">long</span> <span class="kw4">long</span> rem<span class="sy4">;</span> <span class="kw4">long</span> <span class="kw4">long</span> quot<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></pre></div>
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<h2><span class="mw-headline" id="std::imaxdiv_t"><span style="font-size:0.7em; line-height:130%">std::</span>imaxdiv_t</span></h2>
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<pre class="de1"><span class="kw1">struct</span> imaxdiv_t <span class="br0">{</span> <a href="cpp-types-integer.html"><span class="kw118">std::<span class="me2">intmax_t</span></span></a> quot<span class="sy4">;</span> <a href="cpp-types-integer.html"><span class="kw118">std::<span class="me2">intmax_t</span></span></a> rem<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></pre></div>
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<p>&#25110;</p>
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<div class="cpp source-cpp">
<pre class="de1"><span class="kw1">struct</span> imaxdiv_t <span class="br0">{</span> <a href="cpp-types-integer.html"><span class="kw118">std::<span class="me2">intmax_t</span></span></a> rem<span class="sy4">;</span> <a href="cpp-types-integer.html"><span class="kw118">std::<span class="me2">intmax_t</span></span></a> quot<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></pre></div>
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<p>&#33509;&#20313;&#25968;&#25110;&#21830;&#20043;&#19968;&#26080;&#27861;&#34920;&#31034;&#65292;&#21017;&#34892;&#20026;&#26410;&#23450;&#20041;&#12290;</p>
<h3><span class="mw-headline" id=".E6.B3.A8.E8.A7.A3">&#27880;&#35299;</span></h3>
<p>C++11 &#21069;&#65292;&#33509;&#36816;&#31639;&#25968;&#20043;&#19968;&#20026;&#36127;&#65292;&#21017;<a href="cpp-language-operator_arithmetic.html">&#20869;&#24314;&#38500;&#27861;&#19982;&#21462;&#20313;&#36816;&#31639;&#31526;</a>&#20013;&#21830;&#30340;&#33293;&#20837;&#26041;&#21521;&#21644;&#20313;&#25968;&#30340;&#31526;&#21495;&#26159;&#23454;&#29616;&#23450;&#20041;&#30340;&#65292;&#20294;&#22312; <code>std::div</code> &#20013;&#24050;&#20026;&#33391;&#23450;&#20041;&#12290;</p>
<p>&#22810;&#25968;&#24179;&#21488;&#19978;&#65292;&#21333;&#26465; CPU &#25351;&#20196;&#19968;&#21516;&#33719;&#24471;&#21830;&#19982;&#20313;&#25968;&#65292;&#32780;&#27492;&#20989;&#25968;&#21487;&#20197;&#27963;&#29992;&#36825;&#28857;&#65292;&#23613;&#31649;&#32534;&#35793;&#22120;&#36890;&#24120;&#33021;&#22815;&#22312;&#36866;&#21512;&#22788;&#21512;&#24182;&#37051;&#36817;&#30340; / &#19982;&nbsp;% &#12290;</p>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
<div class="t-example">
<div class="t-example-live-link"></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="cpp source-cpp">
<pre class="de1"><span class="co2">#include &lt;string&gt;</span>
<span class="co2">#include &lt;cmath&gt;</span>
<span class="co2">#include &lt;cstdlib&gt;</span>
<span class="co2">#include &lt;iostream&gt;</span>
<a href="cpp-string-basic_string.html"><span class="kw1230">std::<span class="me2">string</span></span></a> itoa<span class="br0">(</span><span class="kw4">int</span> n, <span class="kw4">int</span> base<span class="br0">)</span>
<span class="br0">{</span>
<a href="cpp-string-basic_string.html"><span class="kw1230">std::<span class="me2">string</span></span></a> buf<span class="sy4">;</span>
std<span class="sy4">::</span><span class="me2">div_t</span> dv<span class="br0">{</span><span class="br0">}</span><span class="sy4">;</span> dv.<span class="me1">quot</span> <span class="sy1">=</span> n<span class="sy4">;</span>
<span class="kw1">do</span> <span class="br0">{</span>
dv <span class="sy1">=</span> std<span class="sy4">::</span><span class="me2">div</span><span class="br0">(</span>dv.<span class="me1">quot</span>, base<span class="br0">)</span><span class="sy4">;</span>
buf <span class="sy2">+</span><span class="sy1">=</span> <span class="st0">&quot;0123456789abcdef&quot;</span><span class="br0">[</span>std<span class="sy4">::</span><span class="me2">abs</span><span class="br0">(</span>dv.<span class="me1">rem</span><span class="br0">)</span><span class="br0">]</span><span class="sy4">;</span> <span class="co1">// &#23383;&#31526;&#20018;&#23383;&#38754;&#37327;&#26159;&#25968;&#32452;</span>
<span class="br0">}</span> <span class="kw1">while</span><span class="br0">(</span>dv.<span class="me1">quot</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">if</span><span class="br0">(</span>n<span class="sy1">&lt;</span><span class="nu0">0</span><span class="br0">)</span> buf <span class="sy2">+</span><span class="sy1">=</span> <span class="st0">&#39;-&#39;</span><span class="sy4">;</span>
<span class="kw1">return</span> <span class="br0">{</span>buf.<span class="me1">rbegin</span><span class="br0">(</span><span class="br0">)</span>, buf.<span class="me1">rend</span><span class="br0">(</span><span class="br0">)</span><span class="br0">}</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
<a href="cpp-io-cout.html"><span class="kw1750">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> itoa<span class="br0">(</span><span class="nu0">12345</span>, <span class="nu0">10</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&#39;<span class="es1">\n</span>&#39;</span>
<span class="sy1">&lt;&lt;</span> itoa<span class="br0">(</span><span class="sy2">-</span><span class="nu0">12345</span>, <span class="nu0">10</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&#39;<span class="es1">\n</span>&#39;</span>
<span class="sy1">&lt;&lt;</span> itoa<span class="br0">(</span><span class="nu0">65535</span>, <span class="nu0">16</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
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<p>&#36755;&#20986;&#65306;</p>
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<div class="text source-text">
<pre class="de1">12345
-12345
ffff</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 class="t-dsc-member-div">
<div><a href="cpp-numeric-math-fmod.html"><span class="t-lines"><span>fmod</span><span>fmodf</span><span>fmodl</span></span></a></div>
<div><span class="t-lines"><span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>&#28014;&#28857;&#38500;&#27861;&#36816;&#31639;&#30340;&#20313;&#25968;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-numeric-math-remainder.html"><span class="t-lines"><span>remainder</span><span>remainderf</span><span>remainderl</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>&#38500;&#27861;&#36816;&#31639;&#30340;&#26377;&#31526;&#21495;&#20313;&#25968;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-numeric-math-remquo.html"><span class="t-lines"><span>remquo</span><span>remquof</span><span>remquol</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>&#38500;&#27861;&#36816;&#31639;&#30340;&#26377;&#31526;&#21495;&#20313;&#25968;&#21644;&#26368;&#21518;&#19977;&#20010;&#20108;&#36827;&#21046;&#20301;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
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<div class="visualClear"></div>
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