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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::filesystem::path::</span>filename</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-filesystem.html">filesystem</a>&lrm; | <a href="cpp-filesystem-path.html">path</a></span></div>
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<div><span class="mw-geshi cpp source-cpp">path filename<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx17">(C++17 &#36215;)</span></td>
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<p>&#36820;&#22238;&#36335;&#24452;&#30340;&#36890;&#29992;&#26684;&#24335;&#25991;&#20214;&#21517;&#32452;&#20998;&#12290;</p>
<p>&#31561;&#20215;&#20110; <span class="t-c"><span class="mw-geshi cpp source-cpp">relative_path<span class="br0">(</span><span class="br0">)</span>.<span class="me1">empty</span><span class="br0">(</span><span class="br0">)</span> <span class="sy4">?</span> path<span class="br0">(</span><span class="br0">)</span> <span class="sy4">:</span> <span class="sy2">*--</span>end<span class="br0">(</span><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>path &#25152;&#26631;&#35782;&#30340;&#25991;&#20214;&#21517;&#12290;</p>
<h3><span class="mw-headline" id=".E5.BC.82.E5.B8.B8">&#24322;&#24120;</span></h3>
<p>&#21487;&#33021;&#25243;&#20986;&#23454;&#29616;&#23450;&#20041;&#30340;&#24322;&#24120;&#12290;</p>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
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<pre class="de1"><span class="co2">#include &lt;iostream&gt;</span>
<span class="co2">#include &lt;filesystem&gt;</span>
<span class="kw1">namespace</span> fs <span class="sy1">=</span> std<span class="sy4">::</span><span class="me2">filesystem</span><span class="sy4">;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> fs<span class="sy4">::</span><span class="me2">path</span><span class="br0">(</span><span class="st0">&quot;/foo/bar.txt&quot;</span><span class="br0">)</span>.<span class="me1">filename</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="sy1">&lt;&lt;</span> fs<span class="sy4">::</span><span class="me2">path</span><span class="br0">(</span><span class="st0">&quot;/foo/.bar&quot;</span><span class="br0">)</span>.<span class="me1">filename</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="sy1">&lt;&lt;</span> fs<span class="sy4">::</span><span class="me2">path</span><span class="br0">(</span><span class="st0">&quot;/foo/bar/&quot;</span><span class="br0">)</span>.<span class="me1">filename</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="sy1">&lt;&lt;</span> fs<span class="sy4">::</span><span class="me2">path</span><span class="br0">(</span><span class="st0">&quot;/foo/.&quot;</span><span class="br0">)</span>.<span class="me1">filename</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="sy1">&lt;&lt;</span> fs<span class="sy4">::</span><span class="me2">path</span><span class="br0">(</span><span class="st0">&quot;/foo/..&quot;</span><span class="br0">)</span>.<span class="me1">filename</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="sy1">&lt;&lt;</span> fs<span class="sy4">::</span><span class="me2">path</span><span class="br0">(</span><span class="st0">&quot;.&quot;</span><span class="br0">)</span>.<span class="me1">filename</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="sy1">&lt;&lt;</span> fs<span class="sy4">::</span><span class="me2">path</span><span class="br0">(</span><span class="st0">&quot;..&quot;</span><span class="br0">)</span>.<span class="me1">filename</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="sy1">&lt;&lt;</span> fs<span class="sy4">::</span><span class="me2">path</span><span class="br0">(</span><span class="st0">&quot;/&quot;</span><span class="br0">)</span>.<span class="me1">filename</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="sy1">&lt;&lt;</span> fs<span class="sy4">::</span><span class="me2">path</span><span class="br0">(</span><span class="st0">&quot;//host&quot;</span><span class="br0">)</span>.<span class="me1">filename</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>
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<p>&#21487;&#33021;&#30340;&#36755;&#20986;&#65306;</p>
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<pre class="de1">&quot;bar.txt&quot;
&quot;.bar&quot;
&quot;&quot;
&quot;.&quot;
&quot;..&quot;
&quot;.&quot;
&quot;..&quot;
&quot;&quot;
&quot;host&quot;</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-filesystem-path-extension.html"><span class="t-lines"><span>extension</span></span></a></div>
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<td>&#36820;&#22238;&#25991;&#20214;&#25193;&#23637;&#21517;&#36335;&#24452;&#32452;&#20998;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><a href="cpp-filesystem-path-stem.html"><span class="t-lines"><span>stem</span></span></a></div>
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<td>&#36820;&#22238;&#20027;&#24178;&#36335;&#24452;&#32452;&#20998;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><a href="cpp-filesystem-path-replace_filename.html"><span class="t-lines"><span>replace_filename</span></span></a></div>
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<td>&#20197;&#21478;&#19968;&#36335;&#24452;&#26367;&#25442;&#26368;&#26411;&#30340;&#36335;&#24452;&#32452;&#20998;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><a href="cpp-filesystem-path-has_path.html"><span class="t-lines"><span>has_filename</span></span></a></div>
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<td>&#26816;&#26597;&#23545;&#24212;&#36335;&#24452;&#20803;&#32032;&#26159;&#21542;&#38750;&#31354;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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