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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>towupper</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-string.html">string</a>&lrm; | <a href="cpp-string-wide.html">wide</a></span></div>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code><a href="cpp-header-cwctype.html">&lt;cwctype&gt;</a></code></div>
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<div><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">wint_t</span> towupper<span class="br0">(</span> std<span class="sy4">::</span><span class="me2">wint_t</span> ch <span class="br0">)</span><span class="sy4">;</span></span></div>
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<p>&#33509;&#21487;&#33021;&#21017;&#36716;&#25442;&#32473;&#23450;&#30340;&#23485;&#23383;&#31526;&#20026;&#22823;&#20889;&#12290;</p>
<p>&#33509; <code>ch</code> &#30340;&#20540;&#26082;&#19981;&#33021;&#34920;&#31034;&#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw4">wchar_t</span></span></span> &#21448;&#19981;&#31561;&#20110;&#23439; <span class="t-c"><span class="mw-geshi cpp source-cpp">WEOF</span></span> &#65292;&#21017;&#34892;&#20026;&#26410;&#23450;&#20041;&#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
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<td>ch</td>
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<td>&#35201;&#36716;&#25442;&#30340;&#23485;&#23383;&#31526;</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><code>ch</code> &#30340;&#22823;&#20889;&#29256;&#26412;&#65292;&#25110;&#33509;&#26080;&#22823;&#20889;&#29256;&#26412;&#21015;&#20110;&#24403;&#21069; C &#26412;&#22320;&#29615;&#22659;&#65292;&#21017;&#20026;&#19981;&#20462;&#25913;&#30340; <code>ch</code> &#12290;</p>
<h3><span class="mw-headline" id=".E6.B3.A8.E6.84.8F">&#27880;&#24847;</span></h3>
<p>&#27492;&#20989;&#25968;&#21482;&#33021;&#36827;&#34892; 1:1 &#26144;&#23556;&#65292;&#20363;&#22914; &#39;&szlig;&#39; &#30340;&#22823;&#20889;&#24418;&#24335;&#65288;&#26377;&#19968;&#20123;&#20363;&#22806;&#65289;&#26159;&#21452;&#23383;&#31526;&#23383;&#31526;&#20018; &quot;SS&quot; &#65292;&#23427;&#26080;&#27861;&#36890;&#36807; <span class="t-lc"><strong class="selflink">std::towupper</strong></span> &#33719;&#24471;&#12290;</p>
<p><a rel="nofollow" class="external text" href="http://www.open-std.org/JTC1/SC35/WG5/docs/30112d10.pdf">ISO 30112</a> &#25351;&#23450;&#27492;&#26144;&#23556;&#21253;&#21547;&#21738;&#20123; Unicode &#23383;&#31526;&#23545;&#12290;</p>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
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<p>&#25289;&#19969;<a href="https://en.wikipedia.org/wiki/Long_s" class="extiw" title="enwiki:Long s">&#23383;&#27597; &#39;&#383;&#39; (U+017F)</a> &#26159; &#39;S&#39; (U+0053) &#30340;&#26367;&#29992;&#23567;&#20889;&#24418;&#24335;&#12290;</p>
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<pre class="de1"><span class="co2">#include &lt;iostream&gt;</span>
<span class="co2">#include &lt;cwctype&gt;</span>
<span class="co2">#include &lt;clocale&gt;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
<span class="kw4">wchar_t</span> c <span class="sy1">=</span> L<span class="st0">&#39;<span class="es3">\u017f</span>&#39;</span><span class="sy4">;</span> <span class="co1">// &#25289;&#19969;&#25991;&#23567;&#20889;&#23383;&#27597;&#38271; S (&#39;&#383;&#39;)</span>
<a href="cpp-io-cout.html"><span class="kw1757">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <a href="cpp-io-manip-hex.html"><span class="kw1781">std::<span class="me2">hex</span></span></a> <span class="sy1">&lt;&lt;</span> <a href="cpp-io-manip-showbase.html"><span class="kw1765">std::<span class="me2">showbase</span></span></a><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1757">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;in the default locale, towupper(&quot;</span> <span class="sy1">&lt;&lt;</span> <span class="br0">(</span>std<span class="sy4">::</span><span class="me2">wint_t</span><span class="br0">)</span>c <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;) = &quot;</span>
<span class="sy1">&lt;&lt;</span> std<span class="sy4">::</span><span class="me2">towupper</span><span class="br0">(</span>c<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>
<a href="cpp-locale-setlocale.html"><span class="kw1989">std::<span class="me2">setlocale</span></span></a><span class="br0">(</span><a href="cpp-locale-LC_categories.html"><span class="kw1992">LC_ALL</span></a>, <span class="st0">&quot;en_US.utf8&quot;</span><span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1757">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;in Unicode locale, towupper(&quot;</span> <span class="sy1">&lt;&lt;</span> <span class="br0">(</span>std<span class="sy4">::</span><span class="me2">wint_t</span><span class="br0">)</span>c <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;) = &quot;</span>
<span class="sy1">&lt;&lt;</span> std<span class="sy4">::</span><span class="me2">towupper</span><span class="br0">(</span>c<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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<pre class="de1">in the default locale, towupper(0x17f) = 0x17f
in Unicode locale, towupper(0x17f) = 0x53</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-string-wide-towlower.html"><span class="t-lines"><span>towlower</span></span></a></div>
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<td>&#36716;&#25442;&#23485;&#23383;&#31526;&#20026;&#23567;&#20889;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
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<div><a href="cpp-locale-toupper.html"><span class="t-lines"><span>toupper<span class="t-dsc-small">(std::locale)</span></span></span></a></div>
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<td>&#29992;&#26412;&#22320;&#29615;&#22659;&#30340; ctype &#21051;&#38754;&#23558;&#23383;&#31526;&#36716;&#25442;&#20026;&#22823;&#20889;<br />
<span class="t-mark">(&#20989;&#25968;&#27169;&#26495;)</span></td>
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<div><a href="cpp-string-byte-toupper.html"><span class="t-lines"><span>toupper</span></span></a></div>
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<td>&#36716;&#25442;&#23383;&#31526;&#20026;&#22823;&#20889;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
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