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hustoj/web/cppreference-zh/chmhelp/c-io-getchar.html
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<title>getchar</title>
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<h1 id="firstHeading" class="firstHeading">getchar</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="c.html">c</a>&lrm; | <a href="c-io.html">io</a></span></div>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code>&lt;stdio.h&gt;</code></div>
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<div><span class="mw-geshi c source-c"><span class="kw4">int</span> getchar<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span><span class="sy4">;</span></span></div>
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<p>&#20174; <span class="t-lc"><a href="c-io.html">stdin</a></span> &#35835;&#21462;&#19979;&#19968;&#20010;&#23383;&#31526;&#12290;</p>
<p>&#31561;&#20215;&#20110; <span class="t-c"><span class="mw-geshi c source-c"><a href="c-io-fgetc.html"><span class="kw828">getc</span></a><span class="br0">(</span><a href="c-io.html"><span class="kw885">stdin</span></a><span class="br0">)</span></span></span> &#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
<p>&#65288;&#26080;&#65289;</p>
<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">&#36820;&#22238;&#20540;</span></h3>
<p>&#25104;&#21151;&#26102;&#20026;&#33719;&#24471;&#30340;&#23383;&#31526;&#65292;&#22833;&#36133;&#26102;&#20026; <span class="t-lc"><a href="c-io.html">EOF</a></span> &#12290;</p>
<p>&#33509;&#22833;&#36133;&#30001;&#25991;&#20214;&#23614;&#26465;&#20214;&#20135;&#29983;&#65292;&#21017;&#21478;&#22806;&#35774;&#32622; <span class="t-lc"><a href="c-io.html">stdin</a></span> &#19978;&#30340;<i>&#25991;&#20214;&#23614;</i>&#25351;&#31034;&#22120;&#65288;&#35265; <span class="t-lc"><a href="c-io-feof.html">feof()</a></span> &#65289;&#12290;&#33509;&#22833;&#36133;&#30001;&#26576;&#20123;&#20854;&#20182;&#38169;&#35823;&#20135;&#29983;&#65292;&#21017;&#35774;&#32622; <span class="t-lc"><a href="c-io.html">stdin</a></span> &#19978;&#30340;<i>&#38169;&#35823;</i>&#25351;&#31034;&#22120;&#65288;&#35265; <span class="t-lc"><a href="c-io-ferror.html">ferror()</a></span> &#65289;&#12290;</p>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
<div class="t-example">
<p>getchar&#24102;&#38169;&#35823;&#26816;&#26597;</p>
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<pre class="de1"><span class="co2">#include &lt;stdio.h&gt;</span>
<span class="co2">#include &lt;stdlib.h&gt;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
<span class="kw4">int</span> ch<span class="sy4">;</span>
<span class="kw1">while</span> <span class="br0">(</span><span class="br0">(</span>ch<span class="sy1">=</span>getchar<span class="br0">(</span><span class="br0">)</span><span class="br0">)</span> <span class="sy3">!</span><span class="sy1">=</span> <a href="c-io.html"><span class="kw888">EOF</span></a><span class="br0">)</span> <span class="coMULTI">/* &#20174;stdin&#35835;/&#25171;&#21360;&quot;abcde&quot; */</span>
<a href="c-io-fprintf.html"><span class="kw850">printf</span></a><span class="br0">(</span><span class="st0">&quot;%c&quot;</span>, ch<span class="br0">)</span><span class="sy4">;</span>
<span class="coMULTI">/* &#27979;&#35797;&#25269;&#36798;EOF&#30340;&#21407;&#22240;&#12290; */</span>
<span class="kw1">if</span> <span class="br0">(</span><a href="c-io-feof.html"><span class="kw876">feof</span></a><span class="br0">(</span><a href="c-io.html"><span class="kw885">stdin</span></a><span class="br0">)</span><span class="br0">)</span> <span class="coMULTI">/* &#33509;&#22240;&#25991;&#20214;&#23614;&#26465;&#20214;&#22833;&#36133; */</span>
<a href="c-io-puts.html"><span class="kw835">puts</span></a><span class="br0">(</span><span class="st0">&quot;End of file reached&quot;</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">else</span> <span class="kw1">if</span> <span class="br0">(</span><a href="c-io-ferror.html"><span class="kw877">ferror</span></a><span class="br0">(</span><a href="c-io.html"><span class="kw885">stdin</span></a><span class="br0">)</span><span class="br0">)</span> <span class="coMULTI">/* &#33509;&#22240;&#26576;&#20123;&#38169;&#35823;&#22833;&#36133; */</span>
<span class="br0">{</span>
<a href="c-io-perror.html"><span class="kw878">perror</span></a><span class="br0">(</span><span class="st0">&quot;getchar()&quot;</span><span class="br0">)</span><span class="sy4">;</span>
<a href="c-io-fprintf.html"><span class="kw851">fprintf</span></a><span class="br0">(</span><a href="c-io.html"><span class="kw887">stderr</span></a>,<span class="st0">&quot;getchar() failed in file %s at line # %d<span class="es1">\n</span>&quot;</span>, __FILE__,__LINE__<span class="sy2">-</span><span class="nu0">9</span><span class="br0">)</span><span class="sy4">;</span>
<a href="c-program-exit.html"><span class="kw488">exit</span></a><span class="br0">(</span><a href="c-program-EXIT_status.html"><span class="kw494">EXIT_FAILURE</span></a><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="kw1">return</span> <a href="c-program-EXIT_status.html"><span class="kw493">EXIT_SUCCESS</span></a><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">abcde
End of file reached</pre></div>
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<h3><span class="mw-headline" id=".E5.BC.95.E7.94.A8">&#24341;&#29992;</span></h3>
<div class="t-ref-std-11">
<ul>
<li>C11 &#26631;&#20934;&#65288;ISO/IEC 9899:2011&#65289;&#65306;</li>
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<li>7.21.7.6 The getchar function (p: 332)</li>
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<div class="t-ref-std-c99">
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<li>C99 &#26631;&#20934;&#65288;ISO/IEC 9899:1999&#65289;&#65306;</li>
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<li>7.19.7.6 The getchar function (p: 298)</li>
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<div class="t-ref-std-c89">
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<li>C89/C90 &#26631;&#20934;&#65288;ISO/IEC 9899:1990&#65289;&#65306;</li>
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<li>4.9.7.6 The getchar function</li>
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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="c-io-fgetc.html"><span class="t-lines"><span>fgetc</span><span>getc</span></span></a></div>
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<td>&#20174;&#25991;&#20214;&#27969;&#33719;&#21462;&#19968;&#20010;&#23383;&#31526;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
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