Qt面试题.zip_QT_物联网下载-pudn.com

<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/62672c734c65f41259594a78/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62672c734c65f41259594a78/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">C++</div><div class="t m0 x2 h4 y3 ff2 fs0 fc0 sc1 ls0 ws0">理论基础：</div><div class="t m0 x3 h5 y4 ff3 fs1 fc0 sc0 ls0 ws0">1.<span class="_ _0"> </span>C</div><div class="t m0 x4 h6 y5 ff2 fs1 fc0 sc0 ls0 ws0">和</div><div class="t m0 x5 h5 y4 ff3 fs1 fc0 sc0 ls0 ws0">C++</div><div class="t m0 x6 h6 y5 ff2 fs1 fc0 sc0 ls0 ws0">的区别？</div><div class="t m0 x3 h7 y6 ff3 fs2 fc0 sc0 ls0 ws0">2.</div><div class="t m0 x7 h5 y7 ff3 fs1 fc0 sc0 ls0 ws0">C++</div><div class="t m0 x8 h6 y8 ff2 fs1 fc0 sc0 ls0 ws0">中</div><div class="t m0 x9 h5 y7 ff3 fs1 fc0 sc0 ls0 ws0">struct</div><div class="t m0 xa h6 y8 ff2 fs1 fc0 sc0 ls0 ws0">和</div><div class="t m0 xb h5 y7 ff3 fs1 fc0 sc0 ls0 ws0">class</div><div class="t m0 xc h6 y8 ff2 fs1 fc0 sc0 ls0 ws0">的区别？</div><div class="t m0 x3 h5 y9 ff3 fs1 fc0 sc0 ls0 ws0">3.</div><div class="t m0 xd h6 ya ff2 fs1 fc0 sc0 ls0 ws0">什么是多态？</div><div class="t m0 x3 h7 yb ff3 fs2 fc0 sc0 ls0 ws0">4.</div><div class="t m0 x7 h5 yc ff3 fs1 fc0 sc0 ls0 ws0">const</div><div class="t m0 xe h6 yd ff2 fs1 fc0 sc0 ls0 ws0">关键字的作用<span class="_ _1"></span>？</div><div class="t m0 x3 h7 ye ff3 fs2 fc0 sc0 ls0 ws0">5.</div><div class="t m0 x7 h5 yf ff3 fs1 fc0 sc0 ls0 ws0">static</div><div class="t m0 xe h6 y10 ff2 fs1 fc0 sc0 ls0 ws0">关键字的作<span class="_ _1"></span>用？</div><div class="t m0 x3 h7 y11 ff3 fs2 fc0 sc0 ls0 ws0">6.</div><div class="t m0 x7 h6 y12 ff2 fs1 fc0 sc0 ls0 ws0">堆、栈空间分<span class="_ _1"></span>配区别？</div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div> </body> </html>

<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62672c734c65f41259594a78/bg2.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x3 h7 y13 ff3 fs2 fc0 sc0 ls0 ws0">7.</div><div class="t m0 x7 h6 y14 ff2 fs1 fc0 sc0 ls0 ws0">虚析构函数的<span class="_ _1"></span>作用？</div><div class="t m0 x3 h7 y15 ff3 fs2 fc0 sc0 ls0 ws0">8.</div><div class="t m0 x7 h6 y16 ff2 fs1 fc0 sc0 ls0 ws0">指针和引用的<span class="_ _1"></span>区别？</div><div class="t m0 x3 h7 y17 ff3 fs2 fc0 sc0 ls0 ws0">9.</div><div class="t m0 x7 h6 y18 ff2 fs1 fc0 sc0 ls0 ws0">常见的</div><div class="t m0 xf h5 y19 ff3 fs1 fc0 sc0 ls0 ws0">STL</div><div class="t m0 x10 h6 y18 ff2 fs1 fc0 sc0 ls0 ws0">容器有哪些<span class="_ _1"></span>？</div><div class="t m0 x3 h7 y1a ff3 fs2 fc0 sc0 ls0 ws0">10.</div><div class="t m0 x7 h6 y1b ff2 fs1 fc0 sc0 ls0 ws0">设计模式中“<span class="_ _1"></span>单例模式”如何<span class="_ _1"></span>实现？它有什<span class="_ _1"></span>么作用？</div><div class="t m0 x1 h3 y1c ff1 fs0 fc0 sc0 ls0 ws0">QT</div><div class="t m0 x11 h4 y1d ff2 fs0 fc0 sc1 ls0 ws0">理论基础：</div><div class="t m0 x3 h7 y1e ff3 fs2 fc0 sc0 ls0 ws0">1. </div><div class="t m0 x12 h6 y1f ff2 fs1 fc0 sc0 ls0 ws0">以下哪一项不<span class="_ _1"></span>是</div><div class="t m0 x13 h5 y20 ff3 fs1 fc0 sc0 ls0 ws0">QT</div><div class="t m0 x14 h6 y1f ff2 fs1 fc0 sc0 ls0 ws0">增加的特性</div><div class="t m0 x15 h5 y20 ff3 fs1 fc0 sc0 ls0 ws0">?</div><div class="t m0 x16 h6 y1f ff2 fs1 fc0 sc0 ls0 ws0">（</div><div class="t m0 x17 h5 y20 ff3 fs1 fc0 sc0 ls0 ws0">D</div><div class="t m0 x18 h6 y1f ff2 fs1 fc0 sc0 ls0 ws0">）</div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>

<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62672c734c65f41259594a78/bg3.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 xd h5 y21 ff3 fs1 fc0 sc0 ls0 ws0">A<span class="_ _1"></span>.</div><div class="t m0 x7 h6 y14 ff2 fs1 fc0 sc0 ls0 ws0">有效的对象通<span class="_ _1"></span>信</div><div class="t m0 x19 h5 y21 ff3 fs1 fc0 sc0 ls0 ws0">signal</div><div class="t m0 x1a h6 y14 ff2 fs1 fc0 sc0 ls0 ws0">和</div><div class="t m0 x1b h5 y21 ff3 fs1 fc0 sc0 ls0 ws0">slot</div><div class="t m0 xd h7 y22 ff3 fs2 fc0 sc0 ls0 ws0">B.</div><div class="t m0 x1c h6 y23 ff2 fs1 fc0 sc0 ls0 ws0">可查询和可设<span class="_ _1"></span>计的对象</div><div class="t m0 xd h7 y24 ff3 fs2 fc0 sc0 ls0 ws0">C.</div><div class="t m0 x1c h6 y25 ff2 fs1 fc0 sc0 ls0 ws0">事件及事件过<span class="_ _1"></span>滤器</div><div class="t m0 xd h7 y26 ff3 fs2 fc0 sc0 ls0 ws0">D.</div><div class="t m0 x1c h6 y27 ff2 fs1 fc0 sc0 ls0 ws0">不使用指针</div><div class="t m0 x3 h7 y28 ff3 fs2 fc0 sc0 ls0 ws0">2. </div><div class="t m0 x12 h5 y29 ff3 fs1 fc0 sc0 ls0 ws0">QT</div><div class="t m0 x5 h6 y2a ff2 fs1 fc0 sc0 ls0 ws0">内部对字符集<span class="_ _1"></span>的处理采用以<span class="_ _1"></span>下哪个标准</div><div class="t m0 x1d h5 y29 ff3 fs1 fc0 sc0 ls0 ws0">?</div><div class="t m0 x18 h6 y2a ff2 fs1 fc0 sc0 ls0 ws0">（</div><div class="t m0 x1e h5 y29 ff3 fs1 fc0 sc0 ls0 ws0">A</div><div class="t m0 x1f h6 y2a ff2 fs1 fc0 sc0 ls0 ws0">）</div><div class="t m0 xd h7 y2b ff3 fs2 fc0 sc0 ls0 ws0">A<span class="_ _1"></span>.</div><div class="t m0 x1c h5 y2c ff3 fs1 fc0 sc0 ls0 ws0">UNICODE</div><div class="t m0 xd h7 y2d ff3 fs2 fc0 sc0 ls0 ws0">B.</div><div class="t m0 x1c h5 y2e ff3 fs1 fc0 sc0 ls0 ws0">ASCII</div><div class="t m0 xd h7 y2f ff3 fs2 fc0 sc0 ls0 ws0">C.</div><div class="t m0 x1c h5 y30 ff3 fs1 fc0 sc0 ls0 ws0">GB2312</div><div class="t m0 xd h7 y31 ff3 fs2 fc0 sc0 ls0 ws0">D.</div><div class="t m0 x1c h5 y32 ff3 fs1 fc0 sc0 ls0 ws0">ISO 8859-1</div><div class="t m0 x3 h7 y33 ff3 fs2 fc0 sc0 ls0 ws0">3. </div><div class="t m0 x12 h6 y34 ff2 fs1 fc0 sc0 ls0 ws0">以下关于</div><div class="t m0 x20 h5 y35 ff3 fs1 fc0 sc0 ls0 ws0">QT</div><div class="t m0 x21 h6 y34 ff2 fs1 fc0 sc0 ls0 ws0">描述不正确<span class="_ _1"></span>的是：<span class="_ _2"> </span>（</div><div class="t m0 x16 h5 y35 ff3 fs1 fc0 sc0 ls0 ws0">D</div><div class="t m0 x22 h6 y34 ff2 fs1 fc0 sc0 ls0 ws0">）</div><div class="t m0 xd h7 y1a ff3 fs2 fc0 sc0 ls0 ws0">A<span class="_ _1"></span>.</div><div class="t m0 x1c h6 y1b ff2 fs1 fc0 sc0 ls0 ws0">是基于面向对<span class="_ _1"></span>象的</div><div class="t m0 x23 h5 y36 ff3 fs1 fc0 sc0 ls0 ws0">C++</div><div class="t m0 x24 h6 y1b ff2 fs1 fc0 sc0 ls0 ws0">语言</div><div class="t m0 xd h7 y37 ff3 fs2 fc0 sc0 ls0 ws0">B.</div><div class="t m0 x1c h6 y38 ff2 fs1 fc0 sc0 ls0 ws0">提供了</div><div class="t m0 x25 h5 y39 ff3 fs1 fc0 sc0 ls0 ws0">signal</div><div class="t m0 x26 h6 y38 ff2 fs1 fc0 sc0 ls0 ws0">和</div><div class="t m0 x27 h5 y39 ff3 fs1 fc0 sc0 ls0 ws0">slot</div><div class="t m0 x28 h6 y38 ff2 fs1 fc0 sc0 ls0 ws0">的对象通信机<span class="_ _1"></span>制</div><div class="t m0 xd h7 y3a ff3 fs2 fc0 sc0 ls0 ws0">C.</div><div class="t m0 x1c h6 y3b ff2 fs1 fc0 sc0 ls0 ws0">有可查询和可<span class="_ _1"></span>设计属性</div><div class="t m0 xd h7 y3c ff3 fs2 fc0 sc0 ls0 ws0">D.</div><div class="t m0 x1c h6 y3d ff2 fs1 fc0 sc0 ls0 ws0">没有字符国际<span class="_ _1"></span>化</div><div class="t m0 x3 h7 y3e ff3 fs2 fc0 sc0 ls0 ws0">4. </div><div class="t m0 x12 h6 y3f ff2 fs1 fc0 sc0 ls0 ws0">以下关于</div><div class="t m0 x20 h5 y40 ff3 fs1 fc0 sc0 ls0 ws0">moc</div><div class="t m0 x29 h6 y3f ff2 fs1 fc0 sc0 ls0 ws0">叙述正确的<span class="_ _1"></span>是：<span class="_ _3"> </span>（</div><div class="t m0 x16 h5 y40 ff3 fs1 fc0 sc0 ls0 ws0">D</div><div class="t m0 x22 h6 y3f ff2 fs1 fc0 sc0 ls0 ws0">）</div><div class="t m0 xd h7 y41 ff3 fs2 fc0 sc0 ls0 ws0">A<span class="_ _1"></span>.</div><div class="t m0 x1c h5 y42 ff3 fs1 fc0 sc0 ls0 ws0">moc</div><div class="t m0 x2a h6 y43 ff2 fs1 fc0 sc0 ls0 ws0">即</div><div class="t m0 x10 h5 y42 ff3 fs1 fc0 sc0 ls0 ws0">Mult Object <span class="_ _1"></span> Compiler</div><div class="t m0 xd h7 y44 ff3 fs2 fc0 sc0 ls0 ws0">B.</div><div class="t m0 x1c h6 y45 ff2 fs1 fc0 sc0 ls0 ws0">可产生能被任<span class="_ _1"></span>何标准</div><div class="t m0 x2b h5 y46 ff3 fs1 fc0 sc0 ls0 ws0">C++</div><div class="t m0 x2c h6 y45 ff2 fs1 fc0 sc0 ls0 ws0">编译访问的<span class="_ _1"></span>附加</div><div class="t m0 x1f h5 y46 ff3 fs1 fc0 sc0 ls0 ws0">C++</div><div class="t m0 x2d h6 y45 ff2 fs1 fc0 sc0 ls0 ws0">代码</div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>