klarkxy/hustoj
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
16e678d924922d5217c643362d07958c5f611d0e
hustoj/web/cppreference-zh/chmhelp/cpp-io-basic_stringstream-basic_stringstream.html
klarkxy 196e706fe4 上传cppreference
2025-08-01 12:57:54 +08:00

257 lines
23 KiB
HTML
Raw Blame History

<!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>std::basic_stringstream&lt;CharT,Traits,Allocator&gt;::basic_stringstream</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-cpp_io_basic_stringstream_basic_stringstream skin-cppreference2 action-view cpp-page-template cpp-navbar">
<div id="cpp-content-base">
<div id="content"><a id="top"></a>
<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::basic_stringstream&lt;CharT,Traits,Allocator&gt;::</span>basic_stringstream</h1>
<div id="bodyContent">
<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-io.html">io</a>&lrm; | <a href="cpp-io-basic_stringstream.html">basic stringstream</a></span></div>
<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
<div class="t-page-template" style="">
<p></p>
</div>
<table class="t-dcl-begin">
<tbody>
<tr class="t-dcl t-since-cxx11">
<td>
<div><span class="mw-geshi cpp source-cpp">basic_stringstream<span class="br0">(</span><span class="br0">)</span><br />
&nbsp; &nbsp; <span class="sy4">:</span> basic_stringstream<span class="br0">(</span><a href="cpp-io-ios_base-openmode.html"><span class="kw1674">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">in</span></span></a> <span class="sy3">|</span> <a href="cpp-io-ios_base-openmode.html"><span class="kw1675">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">out</span></span></a><span class="br0">)</span> <span class="br0">{</span> <span class="br0">}</span></span></div>
</td>
<td>(1)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
</tr>
</tbody>
<tbody class="t-dcl-rev t-dcl-rev-num">
<tr class="t-dcl-rev-aux">
<td></td>
<td rowspan="142">(2)</td>
<td></td>
</tr>
<tr class="t-dcl t-until-cxx11">
<td>
<div><span class="mw-geshi cpp source-cpp"><span class="kw1">explicit</span> basic_stringstream<span class="br0">(</span> <a href="cpp-io-ios_base-openmode.html"><span class="kw1671">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">openmode</span></span></a> mode <span class="sy1">=</span> <a href="cpp-io-ios_base-openmode.html"><span class="kw1674">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">in</span></span></a> <span class="sy3">|</span> <a href="cpp-io-ios_base-openmode.html"><span class="kw1675">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">out</span></span></a> <span class="br0">)</span><span class="sy4">;</span></span></div>
</td>
<td class="t-dcl-nopad"></td>
<td><span class="t-mark-rev t-until-cxx11">(C++11 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11">
<td>
<div><span class="mw-geshi cpp source-cpp"><span class="kw1">explicit</span> basic_stringstream<span class="br0">(</span> <a href="cpp-io-ios_base-openmode.html"><span class="kw1671">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">openmode</span></span></a> mode <span class="br0">)</span><span class="sy4">;</span></span></div>
</td>
<td class="t-dcl-nopad"></td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
</tr>
</tbody>
<tbody>
<tr class="t-dcl">
<td>
<div><span class="mw-geshi cpp source-cpp"><span class="kw1">explicit</span> basic_stringstream<span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-string-basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1">&lt;</span>CharT,Traits,Allocator<span class="sy1">&gt;</span><span class="sy3">&amp;</span> str,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<a href="cpp-io-ios_base-openmode.html"><span class="kw1671">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">openmode</span></span></a> mode <span class="sy1">=</span> <a href="cpp-io-ios_base-openmode.html"><span class="kw1674">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">in</span></span></a> <span class="sy3">|</span> <a href="cpp-io-ios_base-openmode.html"><span class="kw1675">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">out</span></span></a> <span class="br0">)</span><span class="sy4">;</span></span></div>
</td>
<td>(3)</td>
<td class="t-dcl-nopad"></td>
</tr>
<tr class="t-dcl t-since-cxx11">
<td>
<div><span class="mw-geshi cpp source-cpp">basic_stringstream<span class="br0">(</span> basic_stringstream<span class="sy3">&amp;&amp;</span> other <span class="br0">)</span><span class="sy4">;</span></span></div>
</td>
<td>(4)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx20">
<td>
<div><span class="mw-geshi cpp source-cpp">basic_stringstream<span class="br0">(</span> <a href="cpp-io-ios_base-openmode.html"><span class="kw1671">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">openmode</span></span></a> mode, <span class="kw4">const</span> Allocator<span class="sy3">&amp;</span> a <span class="br0">)</span><span class="sy4">;</span></span></div>
</td>
<td>(5)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx20">
<td>
<div><span class="mw-geshi cpp source-cpp"><span class="kw1">explicit</span> basic_stringstream<span class="br0">(</span> <a href="cpp-string-basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1">&lt;</span>CharT,Traits,Allocator<span class="sy1">&gt;</span><span class="sy3">&amp;&amp;</span> str,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<a href="cpp-io-ios_base-openmode.html"><span class="kw1671">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">openmode</span></span></a> mode <span class="sy1">=</span> <a href="cpp-io-ios_base-openmode.html"><span class="kw1674">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">in</span></span></a> <span class="sy3">|</span> <a href="cpp-io-ios_base-openmode.html"><span class="kw1675">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">out</span></span></a> <span class="br0">)</span><span class="sy4">;</span></span></div>
</td>
<td>(6)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx20">
<td>
<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> SAlloc<span class="sy1">&gt;</span><br /></span>
<p>basic_stringstream<span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-string-basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1">&lt;</span>CharT,Traits,SAlloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> str,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> Allocator<span class="sy3">&amp;</span> a <span class="br0">)</span><br /></p>
&nbsp; &nbsp; <span class="sy4">:</span> basic_stringstream<span class="br0">(</span>str, <a href="cpp-io-ios_base-openmode.html"><span class="kw1674">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">in</span></span></a> <span class="sy3">|</span> <a href="cpp-io-ios_base-openmode.html"><span class="kw1675">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">out</span></span></a>, a<span class="br0">)</span> <span class="br0">{</span> <span class="br0">}</span></div>
</td>
<td>(7)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx20">
<td>
<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> SAlloc<span class="sy1">&gt;</span><br /></span>
<p>basic_stringstream<span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-string-basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1">&lt;</span>CharT,Traits,SAlloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> str,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <a href="cpp-io-ios_base-openmode.html"><span class="kw1671">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">openmode</span></span></a> mode, <span class="kw4">const</span> Allocator<span class="sy3">&amp;</span> a <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(8)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx20">
<td>
<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> SAlloc<span class="sy1">&gt;</span><br /></span>
<p><span class="kw1">explicit</span> basic_stringstream<span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-string-basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1">&lt;</span>CharT,Traits,SAlloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> str,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<a href="cpp-io-ios_base-openmode.html"><span class="kw1671">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">openmode</span></span></a> mode <span class="sy1">=</span> <a href="cpp-io-ios_base-openmode.html"><span class="kw1674">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">in</span></span></a> <span class="sy3">|</span> <a href="cpp-io-ios_base-openmode.html"><span class="kw1675">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">out</span></span></a> <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(9)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
</tr>
<tr class="t-dcl-sep">
<td></td>
<td></td>
<td></td>
</tr>
</tbody>
</table>
<p>&#26500;&#36896;&#26032;&#30340;&#23383;&#31526;&#20018;&#27969;&#12290;</p>
<div class="t-li1"><span class="t-li">1)</span> &#40664;&#35748;&#26500;&#36896;&#20989;&#25968;&#12290;&#20197;&#40664;&#35748;&#25171;&#24320;&#27169;&#24335;&#26500;&#36896;&#26032;&#30340;&#24213;&#23618;&#23383;&#31526;&#20018;&#35774;&#22791;&#12290;</div>
<div class="t-li1"><span class="t-li">2)</span> &#26500;&#36896;&#26032;&#30340;&#24213;&#23618;&#23383;&#31526;&#20018;&#35774;&#22791;&#12290;&#20197; <span class="t-c"><span class="mw-geshi cpp source-cpp">basic_stringbuf<span class="sy1">&lt;</span>Char,Traits,Allocator<span class="sy1">&gt;</span><span class="br0">(</span>mode<span class="br0">)</span></span></span> &#26500;&#36896;&#24213;&#23618; <code>basic_stringbuf</code> &#23545;&#35937;&#12290;</div>
<div class="t-li1"><span class="t-li">3)</span> &#20197; <code>str</code> &#30340;&#21103;&#26412;&#20026;&#24213;&#23618;&#23383;&#31526;&#20018;&#35774;&#22791;&#30340;&#21021;&#22987;&#20869;&#23481;&#12290;&#20197; <span class="t-c"><span class="mw-geshi cpp source-cpp">basic_stringbuf<span class="sy1">&lt;</span>Char,Traits,Allocator<span class="sy1">&gt;</span><span class="br0">(</span>str, mode<span class="br0">)</span></span></span> &#26500;&#36896;&#24213;&#23618; <code>basic_stringbuf</code> &#23545;&#35937;&#12290;</div>
<div class="t-li1"><span class="t-li">4)</span> &#31227;&#21160;&#26500;&#36896;&#20989;&#25968;&#12290;&#29992;&#31227;&#21160;&#35821;&#20041;&#65292;&#26500;&#36896;&#25317;&#26377; <code>other</code> &#30340;&#29366;&#24577;&#30340;&#23383;&#31526;&#20018;&#27969;&#12290;</div>
<div class="t-li1"><span class="t-li">5)</span> &#26500;&#36896;&#26032;&#30340;&#24213;&#23618;&#23383;&#31526;&#20018;&#35774;&#22791;&#12290;&#20197; <span class="t-c"><span class="mw-geshi cpp source-cpp">basic_stringbuf<span class="sy1">&lt;</span>Char,Traits,Allocator<span class="sy1">&gt;</span><span class="br0">(</span>mode, a<span class="br0">)</span></span></span> &#26500;&#36896;&#24213;&#23618; <code>basic_stringbuf</code> &#23545;&#35937;&#12290;</div>
<div class="t-li1"><span class="t-li">6)</span> &#29992; <code>str</code> &#31227;&#21160;&#26500;&#36896;&#24213;&#23618;&#23383;&#31526;&#20018;&#35774;&#22791;&#30340;&#20869;&#23481;&#12290;&#20197; <span class="t-c"><span class="mw-geshi cpp source-cpp">basic_stringbuf<span class="sy1">&lt;</span>Char,Traits,Allocator<span class="sy1">&gt;</span><span class="br0">(</span>std<span class="sy4">::</span><span class="me2">move</span><span class="br0">(</span>str<span class="br0">)</span>, mode<span class="br0">)</span></span></span> &#26500;&#36896;&#24213;&#23618; <code>basic_stringbuf</code> &#23545;&#35937;&#12290;</div>
<div class="t-li1"><span class="t-li">7)</span> &#26500;&#36896;&#26032;&#30340;&#24213;&#23618;&#23383;&#31526;&#20018;&#35774;&#22791;&#12290;&#20197; <span class="t-c"><span class="mw-geshi cpp source-cpp">basic_stringbuf<span class="sy1">&lt;</span>Char,Traits,Allocator<span class="sy1">&gt;</span><span class="br0">(</span>str, <a href="cpp-io-ios_base-openmode.html"><span class="kw1674">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">in</span></span></a> <span class="sy3">|</span> <a href="cpp-io-ios_base-openmode.html"><span class="kw1675">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">out</span></span></a>, a<span class="br0">)</span></span></span> &#26500;&#36896;&#24213;&#23618; <code>basic_stringbuf</code> &#23545;&#35937;&#12290;</div>
<div class="t-li1"><span class="t-li">8)</span> &#26500;&#36896;&#26032;&#30340;&#24213;&#23618;&#23383;&#31526;&#20018;&#35774;&#22791;&#12290;&#20197; <span class="t-c"><span class="mw-geshi cpp source-cpp">basic_stringbuf<span class="sy1">&lt;</span>Char,Traits,Allocator<span class="sy1">&gt;</span><span class="br0">(</span>str, mode, a<span class="br0">)</span></span></span> &#26500;&#36896;&#24213;&#23618; <code>basic_stringbuf</code> &#23545;&#35937;&#12290;</div>
<div class="t-li1"><span class="t-li">9)</span> &#26500;&#36896;&#26032;&#30340;&#24213;&#23618;&#23383;&#31526;&#20018;&#35774;&#22791;&#12290;&#20197; <span class="t-c"><span class="mw-geshi cpp source-cpp">basic_stringbuf<span class="sy1">&lt;</span>Char,Traits,Allocator<span class="sy1">&gt;</span><span class="br0">(</span>str, mode<span class="br0">)</span></span></span> &#26500;&#36896;&#24213;&#23618; <code>basic_stringbuf</code> &#23545;&#35937;&#12290;&#27492;&#37325;&#36733;&#20165;&#33509; <code>SAlloc</code> &#19982; <code>Allocator</code> &#19981;&#26159;&#21516;&#19968;&#31867;&#22411;&#25165;&#21442;&#19982;&#37325;&#36733;&#20915;&#35758;&#12290;</div>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
<table class="t-par-begin">
<tr class="t-par">
<td>str</td>
<td>-</td>
<td>&#29992;&#20110;&#21021;&#22987;&#21270;&#23383;&#31526;&#20018;&#27969;&#20869;&#23481;&#30340;&#23383;&#31526;&#20018;</td>
</tr>
<tr class="t-par">
<td>mode</td>
<td>-</td>
<td>&#25351;&#23450;&#27969;&#25171;&#24320;&#27169;&#24335;&#12290;&#23427;&#26159;&#20301;&#25513;&#30721;&#31867;&#22411;&#65292;&#23450;&#20041;&#19979;&#21015;&#24120;&#37327;&#65306;
<table class="t-dsc-begin">
<tr class="t-dsc-hitem">
<td>&#24120;&#37327;</td>
<td>&#35299;&#37322;</td>
</tr>
<tr class="t-dsc">
<td><a href="cpp-io-ios_base-openmode.html"><tt>app</tt></a></td>
<td>&#27599;&#27425;&#20889;&#20837;&#21069;&#23547;&#20301;&#21040;&#27969;&#32467;&#23614;</td>
</tr>
<tr class="t-dsc">
<td><a href="cpp-io-ios_base-openmode.html"><tt>binary</tt></a></td>
<td>&#20197;<a href="cpp-io-c-FILE.html#.E4.BA.8C.E8.BF.9B.E5.88.B6.E4.B8.8E.E6.96.87.E6.9C.AC.E6.A8.A1.E5.BC.8F">&#20108;&#36827;&#21046;&#27169;&#24335;</a>&#25171;&#24320;</td>
</tr>
<tr class="t-dsc">
<td><a href="cpp-io-ios_base-openmode.html"><tt>in</tt></a></td>
<td>&#20026;&#35835;&#25171;&#24320;</td>
</tr>
<tr class="t-dsc">
<td><a href="cpp-io-ios_base-openmode.html"><tt>out</tt></a></td>
<td>&#20026;&#20889;&#25171;&#24320;</td>
</tr>
<tr class="t-dsc">
<td><a href="cpp-io-ios_base-openmode.html"><tt>trunc</tt></a></td>
<td>&#22312;&#25171;&#24320;&#26102;&#33293;&#24323;&#27969;&#30340;&#20869;&#23481;</td>
</tr>
<tr class="t-dsc">
<td><a href="cpp-io-ios_base-openmode.html"><tt>ate</tt></a></td>
<td>&#25171;&#24320;&#21518;&#31435;&#21363;&#23547;&#20301;&#21040;&#27969;&#32467;&#23614;</td>
</tr>
</table>
</td>
</tr>
<tr class="t-par">
<td>other</td>
<td>-</td>
<td>&#29992;&#20316;&#28304;&#30340;&#21478;&#19968;&#23383;&#31526;&#20018;&#27969;</td>
</tr>
</table>
<h3><span class="mw-headline" id=".E6.B3.A8.E8.A7.A3">&#27880;&#35299;</span></h3>
<p>&#22312;&#30701;&#30340;&#24490;&#29615;&#20013;&#65292;&#20363;&#22914;&#22312;&#29992;&#20110;&#23383;&#31526;&#20018;&#36716;&#25442;&#26102;&#26500;&#36896;&#21333;&#27425;&#20351;&#29992;&#30340; <code>basic_stringstream</code> &#23545;&#35937;&#65292;&#24320;&#38144;&#21487;&#33021;&#26174;&#33879;&#39640;&#20110;&#35843;&#29992; <span class="t-lc"><a href="cpp-io-basic_stringstream-str.html">str</a></span> &#24182;&#22797;&#29992;&#21516;&#19968;&#23545;&#35937;&#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;iostream&gt;</span>
<span class="co2">#include &lt;sstream&gt;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
<span class="co1">// &#40664;&#35748;&#26500;&#36896;&#20989;&#25968;&#65288;&#36755;&#20837;/&#36755;&#20986;&#27969;&#65289;</span>
<a href="cpp-io-basic_stringstream.html"><span class="kw1737">std::<span class="me2">stringstream</span></span></a> buf1<span class="sy4">;</span>
buf1 <span class="sy1">&lt;&lt;</span> <span class="nu0">7</span><span class="sy4">;</span>
<span class="kw4">int</span> n <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span>
buf1 <span class="sy1">&gt;&gt;</span> n<span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;buf1 = &quot;</span> <span class="sy1">&lt;&lt;</span> buf1.<span class="me1">str</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot; n = &quot;</span> <span class="sy1">&lt;&lt;</span> n <span class="sy1">&lt;&lt;</span> <span class="st0">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span>
<span class="co1">// &#36755;&#20837;&#27969;</span>
<a href="cpp-io-basic_istringstream.html"><span class="kw1735">std::<span class="me2">istringstream</span></span></a> inbuf<span class="br0">(</span><span class="st0">&quot;-10&quot;</span><span class="br0">)</span><span class="sy4">;</span>
inbuf <span class="sy1">&gt;&gt;</span> n<span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;n = &quot;</span> <span class="sy1">&lt;&lt;</span> n <span class="sy1">&lt;&lt;</span> <span class="st0">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span>
<span class="co1">// &#36755;&#20986;&#27969;&#22312; append &#27169;&#24335; (C++11)</span>
<a href="cpp-io-basic_ostringstream.html"><span class="kw1736">std::<span class="me2">ostringstream</span></span></a> buf2<span class="br0">(</span><span class="st0">&quot;test&quot;</span>, <a href="cpp-io-ios_base-openmode.html"><span class="kw1677">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">ate</span></span></a><span class="br0">)</span><span class="sy4">;</span>
buf2 <span class="sy1">&lt;&lt;</span> <span class="st0">&#39;1&#39;</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> buf2.<span class="me1">str</span><span class="br0">(</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>
</div>
<p>&#36755;&#20986;&#65306;</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="text source-text">
<pre class="de1">buf1 = 7 n = 7
n = -10
test1</pre></div>
</div>
</div>
<h3><span class="mw-headline" id=".E7.BC.BA.E9.99.B7.E6.8A.A5.E5.91.8A">&#32570;&#38519;&#25253;&#21578;</span></h3>
<p>&#19979;&#21015;&#26356;&#25913;&#34892;&#20026;&#30340;&#32570;&#38519;&#25253;&#21578;&#36861;&#28335;&#22320;&#24212;&#29992;&#20110;&#20197;&#21069;&#20986;&#29256;&#30340; C++ &#26631;&#20934;&#12290;</p>
<table class="dsctable" style="font-size:0.8em">
<tr>
<th>DR</th>
<th>&#24212;&#29992;&#20110;</th>
<th>&#20986;&#29256;&#26102;&#30340;&#34892;&#20026;</th>
<th>&#27491;&#30830;&#34892;&#20026;</th>
</tr>
<tr>
<td><a rel="nofollow" class="external text" href="https://wg21.link/P0935R0">P0935R0</a></td>
<td>C++11</td>
<td>&#40664;&#35748;&#26500;&#36896;&#20989;&#25968;&#26366;&#20026; explicit</td>
<td>&#20351;&#20043;&#20026;&#38544;&#24335;</td>
</tr>
</table>
<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-io-basic_stringstream-str.html"><span class="t-lines"><span>str</span></span></a></div>
</div>
</td>
<td>&#33719;&#21462;&#25110;&#35774;&#32622;&#24213;&#23618;&#23383;&#31526;&#20018;&#35774;&#22791;&#23545;&#35937;&#30340;&#20869;&#23481;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div t-dsc-member-nobold-div">
<div><a href="cpp-io-basic_stringbuf-basic_stringbuf.html"><span class="t-lines"><span>(&#26500;&#36896;&#20989;&#25968;)</span></span></a></div>
</div>
</td>
<td>&#26500;&#36896;&#19968;&#20010; basic_stringbuf &#23545;&#35937;<br />
<span class="t-mark">(<code>std::basic_stringbuf&lt;CharT,Traits,Allocator&gt;</code> &#30340;&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
</table>
</div>
<div class="visualClear"></div>
</div>
</div>
</div>
</body>
</html>
Reference in New Issue View Git Blame Copy Permalink