127 lines
6.3 KiB
HTML
127 lines
6.3 KiB
HTML
<!DOCTYPE html>
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<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
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<head><meta http-equiv="x-ua-compatible" content="ie=edge">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>towctrans</title>
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<link rel="stylesheet" href="ext.css" />
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<link rel="stylesheet" href="site_modules.css" />
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</head>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-c_string_wide_towctrans skin-cppreference2 action-view cpp-navbar">
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<div id="cpp-content-base">
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<div id="content"><a id="top"></a>
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<h1 id="firstHeading" class="firstHeading">towctrans</h1>
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<div id="bodyContent">
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<div id="contentSub"><span class="subpages">< <a href="c.html">c</a>‎ | <a href="c-string.html">string</a>‎ | <a href="c-string-wide.html">wide</a></span></div>
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<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
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<table class="t-dcl-begin">
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<tbody>
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<tr class="t-dsc-header">
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<td>
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<div>定义于头文件 <code><wctype.h></code></div>
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</td>
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<td></td>
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<td></td>
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</tr>
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<tr class="t-dcl">
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<td>
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<div><span class="mw-geshi c source-c">wint_t towctrans<span class="br0">(</span> wint_t wc, wctrans_t desc <span class="br0">)</span><span class="sy4">;</span></span></div>
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</td>
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<td class="t-dcl-nopad"></td>
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<td><span class="t-mark-rev t-since-c95">(C95 起)</span></td>
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</tr>
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<tr class="t-dcl-sep">
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<td></td>
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<td></td>
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<td></td>
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</tr>
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</tbody>
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</table>
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<p>用 <code>desc</code> 所标识的当前 C 本地环境的 LC_TYPE 映射宽字符 <code>wc</code> 。</p>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
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<table class="t-par-begin">
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<tr class="t-par">
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<td>wc</td>
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<td>-</td>
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<td>要映射的宽字符</td>
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</tr>
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<tr class="t-par">
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<td>desc</td>
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<td>-</td>
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<td><code>LC_CTYPE</code>映射，从对<span class="t-lc"><a href="c-string-wide-wctrans.html">wctrans</a></span>的调用获得</td>
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</tr>
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</table>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">返回值</span></h3>
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<p><code>ch</code> 的被映射值，使用当前 C 本地环境的 LC_TYPE 中的 <code>desc</code> 标识的映射。</p>
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<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
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<div class="t-example">
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<div class="t-example-live-link"></div>
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<div dir="ltr" class="mw-geshi" style="text-align: left;">
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<div class="c source-c">
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<pre class="de1"><span class="co2">#include <locale.h></span>
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<span class="co2">#include <wctype.h></span>
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<span class="co2">#include <wchar.h></span>
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<span class="co2">#include <stdio.h></span>
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<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
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<span class="br0">{</span>
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<a href="c-locale-setlocale.html"><span class="kw900">setlocale</span></a><span class="br0">(</span><a href="c-locale-LC_categories.html"><span class="kw903">LC_ALL</span></a>, <span class="st0">"ja_JP.UTF-8"</span><span class="br0">)</span><span class="sy4">;</span>
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<span class="kw4">wchar_t</span> kana<span class="br0">[</span><span class="br0">]</span> <span class="sy1">=</span> L<span class="st0">"ヒラガナ"</span><span class="sy4">;</span>
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<a href="c-types-size_t.html"><span class="kw100">size_t</span></a> sz <span class="sy1">=</span> <span class="kw4">sizeof</span> kana <span class="sy2">/</span> <span class="kw4">sizeof</span> <span class="sy2">*</span>kana<span class="sy4">;</span>
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<span class="kw4">wchar_t</span> hira<span class="br0">[</span>sz<span class="br0">]</span><span class="sy4">;</span>
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<span class="kw1">for</span><span class="br0">(</span><a href="c-types-size_t.html"><span class="kw100">size_t</span></a> n <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span> n <span class="sy1"><</span> sz<span class="sy4">;</span> <span class="sy2">++</span>n<span class="br0">)</span>
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hira<span class="br0">[</span>n<span class="br0">]</span> <span class="sy1">=</span> towctrans<span class="br0">(</span>kana<span class="br0">[</span>n<span class="br0">]</span>, <a href="c-string-wide-wctrans.html"><span class="kw609">wctrans</span></a><span class="br0">(</span><span class="st0">"tojhira"</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
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<a href="c-io-fprintf.html"><span class="kw850">printf</span></a><span class="br0">(</span><span class="st0">"katakana characters %ls are %ls in hiragana<span class="es1">\n</span>"</span>, kana, hira<span class="br0">)</span><span class="sy4">;</span>
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<span class="br0">}</span></pre></div>
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</div>
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<p>输出：</p>
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<div dir="ltr" class="mw-geshi" style="text-align: left;">
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<div class="text source-text">
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<pre class="de1">katakana characters ヒラガナ are ひらがな in hiragana</pre></div>
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</div>
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</div>
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<h3><span class="mw-headline" id=".E5.BC.95.E7.94.A8">引用</span></h3>
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<div class="t-ref-std-11">
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<ul>
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<li>C11 标准（ISO/IEC 9899:2011）：</li>
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</ul>
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<dl>
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<dd>
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<ul>
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<li>7.30.3.2.1 The towctrans function (p: 454)</li>
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</ul>
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</dd>
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</dl>
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<div class="t-ref-std-c99">
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<ul>
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<li>C99 标准（ISO/IEC 9899:1999）：</li>
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</ul>
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<dl>
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<dd>
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<ul>
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<li>7.25.3.2,1 The towctrans function (p: 400)</li>
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</ul>
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</dd>
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</dl>
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</div>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
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<table class="t-dsc-begin">
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="c-string-wide-wctrans.html"><span class="t-lines"><span>wctrans</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-c95">(C95)</span></span></span></div>
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</div>
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</td>
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<td>查找当前 C 本地环境中的字符映射类别<br />
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<span class="t-mark">(函数)</span></td>
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</tr>
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</table>
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</div>
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</div>
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<div class="visualClear"></div>
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</div>
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</div>
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</div>
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</body>
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</html>
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