https://111qqz.com/en/categories/c++/Recent content in C++ on 111qqz's blogHugo -- gohugo.ioen© 2015-2026 111qqzFri, 01 Feb 2019 11:19:29 +0000https://111qqz.com/en/post/%E5%85%AC%E5%BC%80%E8%AF%BE/6.828/2019-02-01-variadic-function-of-c/Fri, 01 Feb 2019 11:19:29 +0000https://111qqz.com/en/post/%E5%85%AC%E5%BC%80%E8%AF%BE/6.828/2019-02-01-variadic-function-of-c/<p>说起C语言的变长参数，可能听起来比较陌生，因为很少会需要自己实现。不过想一下scanf和printf，参数个数的确是不固定的。</p>https://111qqz.com/en/post/%E5%B7%A5%E7%A8%8B/linux/2018-03-17-linux-static-and-shared-libraries/Sat, 17 Mar 2018 12:56:33 +0000https://111qqz.com/en/post/%E5%B7%A5%E7%A8%8B/linux/2018-03-17-linux-static-and-shared-libraries/<p>发现我对工程一无所知 QAQ。</p> <p>参考资料：</p> <p><a href="http://www.yolinux.com/TUTORIALS/LibraryArchives-StaticAndDynamic.html" target="_blank" rel="noreferrer">Library Archives: Static and Dynamic</a></p> <p>简单地说，<code>.a</code> 文件是静态库，而 <code>.so</code> 文件是共享对象（动态库），作用类似 Windows 下的 DLL。</p>https://111qqz.com/en/post/%E5%B7%A5%E7%A8%8B/%E5%85%B6%E4%BB%96/2017-03-21-lock-free-vs-wait-free-concurrency/Tue, 21 Mar 2017 09:24:56 +0000https://111qqz.com/en/post/%E5%B7%A5%E7%A8%8B/%E5%85%B6%E4%BB%96/2017-03-21-lock-free-vs-wait-free-concurrency/<p><a href="https://rethinkdb.com/blog/lock-free-vs-wait-free-concurrency/" target="_blank" rel="noreferrer">参考资料</a></p> <p>看leveldb源码中遇到的，关于lock-free 和 wait-free..感觉这个讲得不错，我试着翻译一下？</p>https://111qqz.com/en/post/acm-icpc/2016/2016-08-18-c11-e5ada6e4b9a0e7ac94e8aeb0/Thu, 18 Aug 2016 07:37:49 +0000https://111qqz.com/en/post/acm-icpc/2016/2016-08-18-c11-e5ada6e4b9a0e7ac94e8aeb0/<p>昨天终于搞定了ycm对c++11的支持&hellip;.</p> <p>嘛，17都快出来了，我竟然连11都不会用。</p>https://111qqz.com/en/post/acm-icpc/2016/2016-01-11-ce8afade8a880e4b8adstatice79a84e4bd9ce794a8/Mon, 11 Jan 2016 06:55:04 +0000https://111qqz.com/en/post/acm-icpc/2016/2016-01-11-ce8afade8a880e4b8adstatice79a84e4bd9ce794a8/<p>一般有两个</p> <div class="highlight-wrapper"><div class="highlight"><pre tabindex="0" class="chroma"><code class="language-cpp" data-lang="cpp"><span class="line"><span class="ln">1</span><span class="cl"><span class="k">static</span> <span class="kt">int</span> <span class="n">a</span><span class="p">;</span> </span></span><span class="line"><span class="ln">2</span><span class="cl"><span class="kt">int</span> <span class="n">b</span><span class="p">;</span> </span></span><span class="line"><span class="ln">3</span><span class="cl"><span class="kt">void</span> <span class="nf">func</span><span class="p">(</span><span class="kt">void</span><span class="p">)</span> </span></span><span class="line"><span class="ln">4</span><span class="cl"><span class="p">{</span> </span></span><span class="line"><span class="ln">5</span><span class="cl"> <span class="k">static</span> <span class="kt">int</span> <span class="n">c</span><span class="o">=</span><span class="mi">0</span><span class="p">;</span> </span></span><span class="line"><span class="ln">6</span><span class="cl"> <span class="kt">int</span> <span class="n">d</span><span class="p">;</span> </span></span><span class="line"><span class="ln">7</span><span class="cl"><span class="p">}</span></span></span></code></pre></div></div> <p><strong>在这里，a与b都是全局变量，二者的区别是，b可以被别的文件使用，a只能在本文件中使用，这是static对全局变量的作用。</strong> ** c和d的区别是，d是一个自动变量，func函数执行完后，d会自动被释放。但c却不会被释放，下一次调用func函数时，c的值会保留上次的值继续使用(而不是初始值0，初始化只会在函数第一次被调用的时候执行)**</p>