106 lines
8.3 KiB
HTML
106 lines
8.3 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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<title>std::moneypunct<CharT,International>::curr_symbol, do_curr_symbol</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_locale_moneypunct_curr_symbol skin-cppreference2 action-view cpp-navbar">
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::moneypunct<CharT,International>::</span>curr_symbol, do_curr_symbol</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-locale.html">locale</a>‎ | <a href="cpp-locale-moneypunct.html">moneypunct</a></span></div>
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<div>定义于头文件 <code><a href="cpp-header-locale.html"><locale></a></code></div>
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</td>
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<td></td>
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<td></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">public</span><span class="sy4">:</span><br />
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string_type curr_symbol<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span></span></div>
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<td>(1)</td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">protected</span><span class="sy4">:</span><br />
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<span class="kw1">virtual</span> string_type do_curr_symbol<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span></span></div>
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<td>(2)</td>
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<td class="t-dcl-nopad"></td>
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<div class="t-li1"><span class="t-li">1)</span> 公开成员函数，调用最终导出类的成员函数 <code>do_curr_symbol</code> 。</div>
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<div class="t-li1"><span class="t-li">2)</span> 返回此本地环境用作通货标识符的字符串。若 <code>International</code> （ <code>std::moneypunct</code> 的第二模板形参）为 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span> ，则此标识符通常为单个（宽）字符，例如 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="st0">"￥"</span></span></span> 或 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="st0">"$"</span></span></span> 。若 <code>International</code> 为 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span> ，则标识符通常为保有三个 <a href="https://en.wikipedia.org/wiki/ISO_4217" class="extiw" title="enwiki:ISO 4217">ISO 4217</a> 通货代码，后随空格的四字符字符串（ <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="st0">"JPY "</span></span></span> 或 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="st0">"USD "</span></span></span> ）。</div>
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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>保有通货符号或代码的 <code>string_type</code> 类型对象。</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="cpp source-cpp">
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<pre class="de1"><span class="co2">#include <iostream></span>
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<span class="co2">#include <locale></span>
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<span class="kw4">void</span> show_ccy<span class="br0">(</span><span class="kw4">const</span> <span class="kw4">char</span><span class="sy2">*</span> locname<span class="br0">)</span>
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<span class="br0">{</span>
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<a href="cpp-locale-locale.html"><span class="kw1894">std::<span class="me2">locale</span></span></a> loc<span class="br0">(</span>locname<span class="br0">)</span><span class="sy4">;</span>
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<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> locname <span class="sy1"><<</span> <span class="st0">" currency symbol is "</span>
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<span class="sy1"><<</span> <a href="cpp-locale-use_facet.html"><span class="kw1897">std::<span class="me2">use_facet</span></span></a><span class="sy1"><</span><a href="cpp-locale-moneypunct.html"><span class="kw1972">std::<span class="me2">moneypunct</span></span></a><span class="sy1"><</span><span class="kw4">char</span>, <span class="kw2">true</span><span class="sy1">>></span><span class="br0">(</span>loc<span class="br0">)</span>.<span class="me1">curr_symbol</span><span class="br0">(</span><span class="br0">)</span>
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<span class="sy1"><<</span> <span class="st0">"or "</span> <span class="sy1"><<</span> <a href="cpp-locale-use_facet.html"><span class="kw1897">std::<span class="me2">use_facet</span></span></a><span class="sy1"><</span><a href="cpp-locale-moneypunct.html"><span class="kw1972">std::<span class="me2">moneypunct</span></span></a><span class="sy1"><</span><span class="kw4">char</span><span class="sy1">>></span><span class="br0">(</span>loc<span class="br0">)</span>.<span class="me1">curr_symbol</span><span class="br0">(</span><span class="br0">)</span>
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<span class="sy1"><<</span> <span class="st0">" for short<span class="es1">\n</span>"</span><span class="sy4">;</span>
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<span class="br0">}</span>
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<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
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<span class="br0">{</span>
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show_ccy<span class="br0">(</span><span class="st0">"en_US.utf8"</span><span class="br0">)</span><span class="sy4">;</span>
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show_ccy<span class="br0">(</span><span class="st0">"ja_JP.utf8"</span><span class="br0">)</span><span class="sy4">;</span>
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show_ccy<span class="br0">(</span><span class="st0">"sv_SE.utf8"</span><span class="br0">)</span><span class="sy4">;</span>
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show_ccy<span class="br0">(</span><span class="st0">"ru_RU.utf8"</span><span class="br0">)</span><span class="sy4">;</span>
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show_ccy<span class="br0">(</span><span class="st0">"vi_VN.utf8"</span><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">en_US.utf8 currency symbol is USD or $ for short
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ja_JP.utf8 currency symbol is JPY or ￥ for short
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sv_SE.utf8 currency symbol is SEK or kr for short
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ru_RU.utf8 currency symbol is RUB or руб for short
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vi_VN.utf8 currency symbol is VND or ₫ for short</pre></div>
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</div>
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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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<div class="t-dsc-member-div">
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<div><a href="cpp-locale-moneypunct-pos_format.html"><span class="t-lines"><span>do_pos_format</span><span>do_neg_format</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-cmark">[虚]</span></span></span></div>
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</div>
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</td>
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<td>提供通货值的格式化模式<br />
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<span class="t-mark">(虚受保护成员函数)</span></td>
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</tr>
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</table>
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</div>
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<div class="visualClear"></div>
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</div>
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</body>
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</html>
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