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<p>提供基本语法和方法的 C# 快速参考备忘单</p>
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</div></header><div class="menu-tocs"><div class="menu-btn"><svg aria-hidden="true" fill="currentColor" height="1em" width="1em" viewBox="0 0 16 16" version="1.1" data-view-component="true">
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<path fill-rule="evenodd" d="M2 4a1 1 0 100-2 1 1 0 000 2zm3.75-1.5a.75.75 0 000 1.5h8.5a.75.75 0 000-1.5h-8.5zm0 5a.75.75 0 000 1.5h8.5a.75.75 0 000-1.5h-8.5zm0 5a.75.75 0 000 1.5h8.5a.75.75 0 000-1.5h-8.5zM3 8a1 1 0 11-2 0 1 1 0 012 0zm-1 6a1 1 0 100-2 1 1 0 000 2z"></path>
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</svg></div><div class="menu-modal"><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#入门">入门</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#hellocs">Hello.cs</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#命名空间">命名空间</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#访问修饰符">访问修饰符</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串">字符串</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#用户输入">用户输入</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#变量">变量</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#注释">注释</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#条件判断">条件判断</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#数组">数组</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#循环">循环</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#c-数据类型">C# 数据类型</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#原始数据类型">原始数据类型</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#基本数据类型">基本数据类型</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#c-字符串">C# 字符串</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串连接">字符串连接</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串插值">字符串插值</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串成员">字符串成员</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#逐字字符串">逐字字符串</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#成员示例">成员示例</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#频繁字符串拼接">频繁字符串拼接</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#原始字符串文本">原始字符串文本</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串操作">字符串操作</a><a aria-hidden="true" class="leve4 tocs-link" data-num="4" href="#字符串判空">字符串判空</a><a aria-hidden="true" class="leve4 tocs-link" data-num="4" href="#字符串分割">字符串分割</a><a aria-hidden="true" class="leve4 tocs-link" data-num="4" href="#字符串截取">字符串截取</a><a aria-hidden="true" class="leve4 tocs-link" data-num="4" href="#字符串替换">字符串替换</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#运算符和表达式">运算符和表达式</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#逻辑运算">逻辑运算</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#算术运算符">算术运算符</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#关系运算符">关系运算符</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#运算符优先级">运算符优先级</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#杂项">杂项</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#常用-net-概念">常用 .NET 概念</a></div></div><div class="h1wrap-body"><div class="wrap h2body-exist"><div class="wrap-header h2wrap"><h2 id="入门"><a aria-hidden="true" tabindex="-1" href="#入门"><span class="icon icon-link"></span></a>入门</h2><div class="wrap-body">
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</svg></div><div class="menu-modal"><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#入门">入门</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#hellocs">Hello.cs</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#命名空间">命名空间</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#访问修饰符">访问修饰符</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串">字符串</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#用户输入">用户输入</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#变量">变量</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#注释">注释</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#条件判断">条件判断</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#数组">数组</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#循环">循环</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#c-数据类型">C# 数据类型</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#原始数据类型">原始数据类型</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#基本数据类型">基本数据类型</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#c-字符串">C# 字符串</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串连接">字符串连接</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串插值">字符串插值</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串成员">字符串成员</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#逐字字符串">逐字字符串</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#成员示例">成员示例</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#频繁字符串拼接">频繁字符串拼接</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#原始字符串文本">原始字符串文本</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串判空">字符串判空</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串截取">字符串截取</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串分割">字符串分割</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串替换">字符串替换</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#运算符和表达式">运算符和表达式</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#逻辑运算">逻辑运算</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#关系运算符">关系运算符</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#算术运算符">算术运算符</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#运算符优先级">运算符优先级</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#逻辑非运算符">逻辑非运算符</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#逻辑与运算符-">逻辑“与”运算符 &</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#逻辑异或运算符-">逻辑异或运算符 ^</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#逻辑或运算符-">逻辑或运算符 |</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#条件逻辑与运算符-">条件逻辑“与”运算符 &&</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#条件逻辑或运算符-">条件逻辑或运算符 ||</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#杂项">杂项</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#常用-net-概念">常用 .NET 概念</a></div></div><div class="h1wrap-body"><div class="wrap h2body-exist"><div class="wrap-header h2wrap"><h2 id="入门"><a aria-hidden="true" tabindex="-1" href="#入门"><span class="icon icon-link"></span></a>入门</h2><div class="wrap-body">
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</div></div><div class="h2wrap-body"><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="hellocs"><a aria-hidden="true" tabindex="-1" href="#hellocs"><span class="icon icon-link"></span></a>Hello.cs</h3><div class="wrap-body">
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<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token keyword">class</span> <span class="token class-name">Hello</span> <span class="token punctuation">{</span>
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</span><span class="code-line"> <span class="token comment">// main method</span>
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@ -130,17 +130,12 @@
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</span><span class="code-line">
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</span><span class="code-line"><span class="token comment">/*
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</span></span><span class="code-line"><span class="token comment"> * 多行
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</span></span><span class="code-line"><span class="token comment"> * 注释
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</span></span><span class="code-line"><span class="token comment"> * 注释 - 用于文档
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</span></span><span class="code-line"><span class="token comment"> */</span>
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</span><span class="code-line">
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</span><span class="code-line"><span class="token comment">// TODO：向IDE中的任务列表添加注释（VS、Rider都支持）</span>
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</span><span class="code-line">
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</span><span class="code-line"><span class="token comment">// TODO：</span>
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</span><span class="code-line"><span class="token comment">// 向IDE中的任务列表添加注释（VS、Rider都支持）</span>
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</span><span class="code-line"><span class="token doc-comment comment">/// XML 单行注释，用于文档</span>
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</span><span class="code-line">
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</span><span class="code-line"><span class="token comment">/**
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</span></span><span class="code-line"><span class="token comment"> * XML 多行注释，
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</span></span><span class="code-line"><span class="token comment"> * 用于文档
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</span></span><span class="code-line"><span class="token comment"> */</span>
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</span></code></pre>
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</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="条件判断"><a aria-hidden="true" tabindex="-1" href="#条件判断"><span class="icon icon-link"></span></a>条件判断</h3><div class="wrap-body">
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<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token class-name"><span class="token keyword">int</span></span> j <span class="token operator">=</span> <span class="token number">10</span><span class="token punctuation">;</span>
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@ -160,7 +155,8 @@
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</span><span class="code-line"><span class="token class-name"><span class="token keyword">int</span><span class="token punctuation">[</span><span class="token punctuation">]</span></span> mylist <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token number">100</span><span class="token punctuation">,</span> <span class="token number">200</span><span class="token punctuation">}</span><span class="token punctuation">;</span>
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</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span><span class="token punctuation">[</span><span class="token punctuation">]</span></span> answers <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token boolean">true</span><span class="token punctuation">,</span> <span class="token boolean">false</span><span class="token punctuation">}</span><span class="token punctuation">;</span>
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</span></code></pre>
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</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="循环"><a aria-hidden="true" tabindex="-1" href="#循环"><span class="icon icon-link"></span></a>循环</h3><div class="wrap-body">
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</div></div></div><div class="wrap h3body-not-exist col-span-2"><div class="wrap-header h3wrap"><h3 id="循环"><a aria-hidden="true" tabindex="-1" href="#循环"><span class="icon icon-link"></span></a>循环</h3><div class="wrap-body">
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<!--rehype:wrap-class=col-span-2-->
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<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token class-name"><span class="token keyword">int</span><span class="token punctuation">[</span><span class="token punctuation">]</span></span> numbers <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">}</span><span class="token punctuation">;</span>
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</span><span class="code-line"><span class="token keyword">for</span><span class="token punctuation">(</span><span class="token class-name"><span class="token keyword">int</span></span> i <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span> i <span class="token operator"><</span> numbers<span class="token punctuation">.</span>Length<span class="token punctuation">;</span> i<span class="token operator">++</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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</span><span class="code-line"> Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span>numbers<span class="token punctuation">[</span>i<span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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@ -417,8 +413,8 @@
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</span><span class="code-line"> <span class="token string">""</span>"<span class="token punctuation">;</span>
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</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span>multiLine<span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// => Content begin "Hello World!" /\n<>"" end.</span>
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</span></code></pre>
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</div></div></div><div class="wrap h3body-exist"><div class="wrap-header h3wrap"><h3 id="字符串操作"><a aria-hidden="true" tabindex="-1" href="#字符串操作"><span class="icon icon-link"></span></a>字符串操作</h3><div class="wrap-body">
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<h4 id="字符串判空"><a aria-hidden="true" tabindex="-1" href="#字符串判空"><span class="icon icon-link"></span></a>字符串判空</h4>
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</div></div></div><div class="wrap h3body-not-exist col-span-2"><div class="wrap-header h3wrap"><h3 id="字符串判空"><a aria-hidden="true" tabindex="-1" href="#字符串判空"><span class="icon icon-link"></span></a>字符串判空</h3><div class="wrap-body">
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<!--rehype:wrap-class=col-span-2-->
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<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token class-name"><span class="token keyword">string</span></span> name<span class="token punctuation">;</span> <span class="token comment">//空引用</span>
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</span><span class="code-line"><span class="token class-name"><span class="token keyword">string</span></span> gender <span class="token operator">=</span> <span class="token string">""</span><span class="token punctuation">;</span> <span class="token comment">//空值</span>
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</span><span class="code-line">
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@ -426,29 +422,31 @@
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</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span><span class="token keyword">string</span><span class="token punctuation">.</span><span class="token function">IsNullOrEmpty</span><span class="token punctuation">(</span>name<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">//输出 true</span>
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</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span><span class="token keyword">string</span><span class="token punctuation">.</span><span class="token function">IsNullOrEmpty</span><span class="token punctuation">(</span>gender<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 输出 true</span>
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</span></code></pre>
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<h4 id="字符串分割"><a aria-hidden="true" tabindex="-1" href="#字符串分割"><span class="icon icon-link"></span></a>字符串分割</h4>
|
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</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="字符串截取"><a aria-hidden="true" tabindex="-1" href="#字符串截取"><span class="icon icon-link"></span></a>字符串截取</h3><div class="wrap-body">
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<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token class-name"><span class="token keyword">string</span></span> Str <span class="token operator">=</span> <span class="token string">"字符串截取"</span><span class="token punctuation">;</span>
|
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</span><span class="code-line">Str <span class="token operator">=</span> Str<span class="token punctuation">.</span><span class="token function">Substring</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span>Str<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token comment">// 输出结果“串”，意为从第二个下标开始截取一位字符</span>
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||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist col-span-2"><div class="wrap-header h3wrap"><h3 id="字符串分割"><a aria-hidden="true" tabindex="-1" href="#字符串分割"><span class="icon icon-link"></span></a>字符串分割</h3><div class="wrap-body">
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<!--rehype:wrap-class=col-span-2-->
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<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token class-name"><span class="token keyword">string</span></span> Name <span class="token operator">=</span> <span class="token string">"字A符A串A分A割"</span><span class="token punctuation">;</span>
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||||
</span><span class="code-line"><span class="token class-name"><span class="token keyword">string</span><span class="token punctuation">[</span><span class="token punctuation">]</span></span> Names<span class="token operator">=</span>Name<span class="token punctuation">.</span><span class="token function">Split</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token constructor-invocation class-name"><span class="token keyword">char</span><span class="token punctuation">[</span><span class="token punctuation">]</span></span> <span class="token punctuation">{</span> <span class="token char">'A'</span> <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token comment">//会以A为媒介把字符串分成若干份</span>
|
||||
</span><span class="code-line"><span class="token comment">// 会以A为媒介把字符串分成若干份</span>
|
||||
</span><span class="code-line"><span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token class-name"><span class="token keyword">int</span></span> i <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span> i <span class="token operator"><</span> Names<span class="token punctuation">.</span>Length<span class="token punctuation">;</span> i<span class="token operator">++</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token punctuation">{</span>
|
||||
</span><span class="code-line"> Console<span class="token punctuation">.</span><span class="token function">Write</span><span class="token punctuation">(</span>Names<span class="token punctuation">[</span>i<span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
<h4 id="字符串截取"><a aria-hidden="true" tabindex="-1" href="#字符串截取"><span class="icon icon-link"></span></a>字符串截取</h4>
|
||||
<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token class-name"><span class="token keyword">string</span></span> Str <span class="token operator">=</span> <span class="token string">"字符串截取"</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line">Str <span class="token operator">=</span> Str<span class="token punctuation">.</span><span class="token function">Substring</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span>Str<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token comment">//输出结果“串”，意为从第二个下标开始截取一位字符</span>
|
||||
</span></code></pre>
|
||||
<h4 id="字符串替换"><a aria-hidden="true" tabindex="-1" href="#字符串替换"><span class="icon icon-link"></span></a>字符串替换</h4>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="字符串替换"><a aria-hidden="true" tabindex="-1" href="#字符串替换"><span class="icon icon-link"></span></a>字符串替换</h3><div class="wrap-body">
|
||||
<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token class-name"><span class="token keyword">string</span></span> Rep <span class="token operator">=</span> <span class="token string">"字符1替换"</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line">Rep <span class="token operator">=</span> Rep<span class="token punctuation">.</span><span class="token function">Replace</span><span class="token punctuation">(</span><span class="token string">"1"</span><span class="token punctuation">,</span> <span class="token string">"串"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span>Rep<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token comment">//会把字符中的 “1”替换成“串”</span>
|
||||
</span><span class="code-line"><span class="token comment">// 会把字符中的 “1”替换成“串”</span>
|
||||
</span></code></pre>
|
||||
</div></div></div></div></div><div class="wrap h2body-exist"><div class="wrap-header h2wrap"><h2 id="运算符和表达式"><a aria-hidden="true" tabindex="-1" href="#运算符和表达式"><span class="icon icon-link"></span></a>运算符和表达式</h2><div class="wrap-body">
|
||||
</div></div><div class="h2wrap-body"><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="逻辑运算"><a aria-hidden="true" tabindex="-1" href="#逻辑运算"><span class="icon icon-link"></span></a>逻辑运算</h3><div class="wrap-body">
|
||||
</div></div><div class="h2wrap-body"><div class="wrap h3body-not-exist row-span-2"><div class="wrap-header h3wrap"><h3 id="逻辑运算"><a aria-hidden="true" tabindex="-1" href="#逻辑运算"><span class="icon icon-link"></span></a>逻辑运算</h3><div class="wrap-body">
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token comment">//或运算, 与运算, 非运算</span>
|
||||
</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> A <span class="token operator">=</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> B <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
|
||||
@ -555,10 +553,55 @@
|
||||
|
||||
|
||||
|
||||
<table class="show-header"><thead><tr><th align="left">x</th><th>y</th><th>x & y</th><th>x | y</th><th>x ^ y</th><th>! x</th></tr></thead><tbody><tr><td align="left">true</td><td>true</td><td>true</td><td>true</td><td>false</td><td>false</td></tr><tr><td align="left">true</td><td>false</td><td>false</td><td>true</td><td>true</td><td>false</td></tr><tr><td align="left">true</td><td>null</td><td>null</td><td>true</td><td>null</td><td>false</td></tr><tr><td align="left">false</td><td>true</td><td>false</td><td>true</td><td>true</td><td>true</td></tr><tr><td align="left">false</td><td>false</td><td>false</td><td>false</td><td>false</td><td>true</td></tr><tr><td align="left">false</td><td>null</td><td>false</td><td>null</td><td>null</td><td>true</td></tr><tr><td align="left">null</td><td>true</td><td>null</td><td>true</td><td>null</td><td>null</td></tr><tr><td align="left">null</td><td>false</td><td>false</td><td>null</td><td>null</td><td>null</td></tr><tr><td align="left">null</td><td>null</td><td>null</td><td>null</td><td>null</td><td>null</td></tr></tbody></table>
|
||||
<table class="show-header"><thead><tr><th align="left">x</th><th>y</th><th>x & y</th><th>x | y</th><th>x ^ y</th><th>! x</th></tr></thead><tbody><tr><td align="left"><code>true</code></td><td><code>true</code></td><td><code>true</code></td><td><code>true</code></td><td>false</td><td>false</td></tr><tr><td align="left"><code>true</code></td><td>false</td><td>false</td><td><code>true</code></td><td><code>true</code></td><td>false</td></tr><tr><td align="left"><code>true</code></td><td><pur>null</pur></td><td><pur>null</pur></td><td><code>true</code></td><td><pur>null</pur></td><td>false</td></tr><tr><td align="left">false</td><td><code>true</code></td><td>false</td><td><code>true</code></td><td><code>true</code></td><td><code>true</code></td></tr><tr><td align="left">false</td><td>false</td><td>false</td><td>false</td><td>false</td><td><code>true</code></td></tr><tr><td align="left">false</td><td><pur>null</pur></td><td>false</td><td><pur>null</pur></td><td><pur>null</pur></td><td><code>true</code></td></tr><tr><td align="left"><pur>null</pur></td><td><code>true</code></td><td><pur>null</pur></td><td><code>true</code></td><td><pur>null</pur></td><td><pur>null</pur></td></tr><tr><td align="left"><pur>null</pur></td><td>false</td><td>false</td><td><pur>null</pur></td><td><pur>null</pur></td><td><pur>null</pur></td></tr><tr><td align="left"><pur>null</pur></td><td><pur>null</pur></td><td><pur>null</pur></td><td><pur>null</pur></td><td><pur>null</pur></td><td><pur>null</pur></td></tr></tbody></table>
|
||||
<!--rehype:className=show-header-->
|
||||
</div></div></div><div class="wrap h3body-not-exist col-span-1"><div class="wrap-header h3wrap"><h3 id="算术运算符"><a aria-hidden="true" tabindex="-1" href="#算术运算符"><span class="icon icon-link"></span></a>算术运算符</h3><div class="wrap-body">
|
||||
<!--rehype:wrap-class=col-span-1-->
|
||||
</div></div></div><div class="wrap h3body-not-exist col-span-2"><div class="wrap-header h3wrap"><h3 id="关系运算符"><a aria-hidden="true" tabindex="-1" href="#关系运算符"><span class="icon icon-link"></span></a>关系运算符</h3><div class="wrap-body">
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
<p>C# 支持下表中的所有关系运算符。假设变量 A 的值为 1，变量 B 的值为 2，则：</p>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<table class="show-header"><thead><tr><th align="left">运算符</th><th>描述</th><th>实例</th></tr></thead><tbody><tr><td align="left">==</td><td>检查两个操作数的值是否相等，如果相等则条件为真。</td><td>(A == B) 不为真。</td></tr><tr><td align="left">!=</td><td>检查两个操作数的值是否相等，如果不相等则条件为真。</td><td>(A != B) 为真。</td></tr><tr><td align="left">></td><td>检查左操作数的值是否大于右操作数的值，如果是则条件为真。</td><td>(A > B) 不为真。</td></tr><tr><td align="left"><</td><td>检查左操作数的值是否小于右操作数的值，如果是则条件为真。</td><td>(A < B) 为真。</td></tr><tr><td align="left">>=</td><td>检查左操作数的值是否大于或等于右操作数的值，如果是则条件为真。</td><td>(A >= B) 不为真。</td></tr><tr><td align="left"><=</td><td>检查左操作数的值是否小于或等于右操作数的值，如果是则条件为真。</td><td>(A <= B) 为真。</td></tr></tbody></table>
|
||||
<!--rehype:className=show-header-->
|
||||
</div></div></div><div class="wrap h3body-not-exist col-span-2"><div class="wrap-header h3wrap"><h3 id="算术运算符"><a aria-hidden="true" tabindex="-1" href="#算术运算符"><span class="icon icon-link"></span></a>算术运算符</h3><div class="wrap-body">
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
<p>C# 支持下表中的所有算术运算符。假设变量 A 的值为 10，变量 B 的值为 20，则：</p>
|
||||
|
||||
|
||||
@ -607,54 +650,8 @@
|
||||
|
||||
<table class="show-header"><thead><tr><th align="left">运算符</th><th>描述</th><th>实例</th></tr></thead><tbody><tr><td align="left">+</td><td>把两个操作数相加</td><td>A + B 将得到 30</td></tr><tr><td align="left">-</td><td>从第一个操作数中减去第二个操作数</td><td>A - B 将得到 -10</td></tr><tr><td align="left">*</td><td>把两个操作数相乘</td><td>A * B 将得到 200</td></tr><tr><td align="left">/</td><td>分子除以分母</td><td>B / A 将得到 2</td></tr><tr><td align="left">%</td><td>取模运算符，整除后的余数</td><td>B % A 将得到 0</td></tr><tr><td align="left">++</td><td>自增运算符，整数值增加 1</td><td>A++ 将得到 11</td></tr><tr><td align="left">--</td><td>自减运算符，整数值减少 1</td><td>A-- 将得到 9</td></tr></tbody></table>
|
||||
<!--rehype:className=show-header-->
|
||||
</div></div></div><div class="wrap h3body-not-exist col-span-2"><div class="wrap-header h3wrap"><h3 id="关系运算符"><a aria-hidden="true" tabindex="-1" href="#关系运算符"><span class="icon icon-link"></span></a>关系运算符</h3><div class="wrap-body">
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
<p>C# 支持下表中的所有关系运算符。假设变量 A 的值为 1，变量 B 的值为 2，则：</p>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<table class="show-header"><thead><tr><th align="left">运算符</th><th>描述</th><th>实例</th></tr></thead><tbody><tr><td align="left">==</td><td>检查两个操作数的值是否相等，如果相等则条件为真。</td><td>(A == B) 不为真。</td></tr><tr><td align="left">!=</td><td>检查两个操作数的值是否相等，如果不相等则条件为真。</td><td>(A != B) 为真。</td></tr><tr><td align="left">></td><td>检查左操作数的值是否大于右操作数的值，如果是则条件为真。</td><td>(A > B) 不为真。</td></tr><tr><td align="left"><</td><td>检查左操作数的值是否小于右操作数的值，如果是则条件为真。</td><td>(A < B) 为真。</td></tr><tr><td align="left">>=</td><td>检查左操作数的值是否大于或等于右操作数的值，如果是则条件为真。</td><td>(A >= B) 不为真。</td></tr><tr><td align="left"><=</td><td>检查左操作数的值是否小于或等于右操作数的值，如果是则条件为真。</td><td>(A <= B) 为真。</td></tr></tbody></table>
|
||||
<!--rehype:className=show-header-->
|
||||
</div></div></div><div class="wrap h3body-not-exist col-span-3"><div class="wrap-header h3wrap"><h3 id="运算符优先级"><a aria-hidden="true" tabindex="-1" href="#运算符优先级"><span class="icon icon-link"></span></a>运算符优先级</h3><div class="wrap-body">
|
||||
<!--rehype:wrap-class=col-span-3-->
|
||||
<p>运算符的优先级确定表达式中项的组合。这会影响到一个表达式如何计算。某些运算符比其他运算符有更高的优先级，例如，乘除运算符具有比加减运算符更高的优先级。</p>
|
||||
</div></div></div><div class="wrap h3body-not-exist col-span-2 row-span-3"><div class="wrap-header h3wrap"><h3 id="运算符优先级"><a aria-hidden="true" tabindex="-1" href="#运算符优先级"><span class="icon icon-link"></span></a>运算符优先级</h3><div class="wrap-body">
|
||||
<!--rehype:wrap-class=col-span-2 row-span-3-->
|
||||
<p>下表将按运算符优先级从高到低列出各个运算符，具有较高优先级的运算符出现在表格的上面，具有较低优先级的运算符出现在表格的下面。在表达式中，较高优先级的运算符会优先被计算。</p>
|
||||
|
||||
|
||||
@ -743,6 +740,92 @@
|
||||
|
||||
<table class="show-header"><thead><tr><th align="left">类别</th><th>运算符</th><th>结合性</th></tr></thead><tbody><tr><td align="left">后缀</td><td>() [] -> . ++ - -</td><td>从左到右</td></tr><tr><td align="left">一元</td><td>+ - ! ~ ++ - - (type)* & sizeof</td><td>从右到左</td></tr><tr><td align="left">乘除</td><td>* / %</td><td>从左到右</td></tr><tr><td align="left">加减</td><td>+ -</td><td>从左到右</td></tr><tr><td align="left">移位</td><td><< >></td><td>从左到右</td></tr><tr><td align="left">关系</td><td>< <= > >=</td><td>从左到右</td></tr><tr><td align="left">相等</td><td>== !=</td><td>从左到右</td></tr><tr><td align="left">位与 AND</td><td>&</td><td>从左到右</td></tr><tr><td align="left">位异或 XOR</td><td>^</td><td>从左到右</td></tr><tr><td align="left">位或 OR</td><td>|</td><td>从左到右</td></tr><tr><td align="left">逻辑与 AND</td><td>&&</td><td>从左到右</td></tr><tr><td align="left">逻辑或 OR</td><td>||</td><td>从左到右</td></tr><tr><td align="left">条件</td><td>?:</td><td>从右到左</td></tr><tr><td align="left">赋值</td><td>= += -= *= /= %=>>= <<= &= ^= |=</td><td>从右到左</td></tr><tr><td align="left">逗号</td><td>,</td><td>从左到右</td></tr></tbody></table>
|
||||
<!--rehype:className=show-header-->
|
||||
<p>运算符的优先级确定表达式中项的组合。这会影响到一个表达式如何计算。某些运算符比其他运算符有更高的优先级，例如，乘除运算符具有比加减运算符更高的优先级。</p>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="逻辑非运算符"><a aria-hidden="true" tabindex="-1" href="#逻辑非运算符"><span class="icon icon-link"></span></a>逻辑非运算符</h3><div class="wrap-body">
|
||||
<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> passed <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span><span class="token operator">!</span>passed<span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 输出: True</span>
|
||||
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span><span class="token operator">!</span><span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 输出: False</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="逻辑与运算符-"><a aria-hidden="true" tabindex="-1" href="#逻辑与运算符-"><span class="icon icon-link"></span></a>逻辑“与”运算符 &</h3><div class="wrap-body">
|
||||
<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token return-type class-name"><span class="token keyword">bool</span></span> <span class="token function">SecondOperand</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token punctuation">{</span>
|
||||
</span><span class="code-line"> Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span><span class="token string">"计算第二个操作数"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"> <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> a <span class="token operator">=</span> <span class="token boolean">false</span> <span class="token operator">&</span> <span class="token function">SecondOperand</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span>a<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token comment">// 输出:</span>
|
||||
</span><span class="code-line"><span class="token comment">// 计算第二个操作数</span>
|
||||
</span><span class="code-line"><span class="token comment">// False</span>
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> b <span class="token operator">=</span> <span class="token boolean">true</span> <span class="token operator">&</span> <span class="token function">SecondOperand</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span>b<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token comment">// 输出:</span>
|
||||
</span><span class="code-line"><span class="token comment">// 计算第二个操作数</span>
|
||||
</span><span class="code-line"><span class="token comment">// True</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="逻辑异或运算符-"><a aria-hidden="true" tabindex="-1" href="#逻辑异或运算符-"><span class="icon icon-link"></span></a>逻辑异或运算符 ^</h3><div class="wrap-body">
|
||||
<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span><span class="token boolean">true</span> <span class="token operator">^</span> <span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 输出: False</span>
|
||||
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span><span class="token boolean">true</span> <span class="token operator">^</span> <span class="token boolean">false</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 输出: True</span>
|
||||
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span><span class="token boolean">false</span> <span class="token operator">^</span> <span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 输出: True</span>
|
||||
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span><span class="token boolean">false</span> <span class="token operator">^</span> <span class="token boolean">false</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">// 输出: False</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="逻辑或运算符-"><a aria-hidden="true" tabindex="-1" href="#逻辑或运算符-"><span class="icon icon-link"></span></a>逻辑或运算符 |</h3><div class="wrap-body">
|
||||
<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token return-type class-name"><span class="token keyword">bool</span></span> <span class="token function">SecondOperand</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token punctuation">{</span>
|
||||
</span><span class="code-line"> Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span><span class="token string">"计算第二个操作数"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"> <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> a <span class="token operator">=</span> <span class="token boolean">true</span> <span class="token operator">|</span> <span class="token function">SecondOperand</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span>a<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token comment">// 输出:</span>
|
||||
</span><span class="code-line"><span class="token comment">// 计算第二个操作数</span>
|
||||
</span><span class="code-line"><span class="token comment">// True</span>
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> b <span class="token operator">=</span> <span class="token boolean">false</span> <span class="token operator">|</span> <span class="token function">SecondOperand</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span>b<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token comment">// 输出:</span>
|
||||
</span><span class="code-line"><span class="token comment">// 计算第二个操作数</span>
|
||||
</span><span class="code-line"><span class="token comment">// True</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="条件逻辑与运算符-"><a aria-hidden="true" tabindex="-1" href="#条件逻辑与运算符-"><span class="icon icon-link"></span></a>条件逻辑“与”运算符 &&</h3><div class="wrap-body">
|
||||
<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token return-type class-name"><span class="token keyword">bool</span></span> <span class="token function">SecondOperand</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token punctuation">{</span>
|
||||
</span><span class="code-line"> Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span><span class="token string">"计算第二个操作数"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"> <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> a <span class="token operator">=</span> <span class="token boolean">false</span> <span class="token operator">&&</span> <span class="token function">SecondOperand</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span>a<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token comment">// 输出:</span>
|
||||
</span><span class="code-line"><span class="token comment">// False</span>
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> b <span class="token operator">=</span> <span class="token boolean">true</span> <span class="token operator">&&</span> <span class="token function">SecondOperand</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span>b<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token comment">// 输出:</span>
|
||||
</span><span class="code-line"><span class="token comment">// 计算第二个操作数</span>
|
||||
</span><span class="code-line"><span class="token comment">// True</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="条件逻辑或运算符-"><a aria-hidden="true" tabindex="-1" href="#条件逻辑或运算符-"><span class="icon icon-link"></span></a>条件逻辑或运算符 ||</h3><div class="wrap-body">
|
||||
<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token return-type class-name"><span class="token keyword">bool</span></span> <span class="token function">SecondOperand</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token punctuation">{</span>
|
||||
</span><span class="code-line"> Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span><span class="token string">"计算第二个操作数"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"> <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> a <span class="token operator">=</span> <span class="token boolean">true</span> <span class="token operator">||</span> <span class="token function">SecondOperand</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span>a<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token comment">// 输出:</span>
|
||||
</span><span class="code-line"><span class="token comment">// True</span>
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> b <span class="token operator">=</span> <span class="token boolean">false</span> <span class="token operator">||</span> <span class="token function">SecondOperand</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span>b<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||||
</span><span class="code-line"><span class="token comment">// 输出:</span>
|
||||
</span><span class="code-line"><span class="token comment">// 计算第二个操作数</span>
|
||||
</span><span class="code-line"><span class="token comment">// True</span>
|
||||
</span></code></pre>
|
||||
</div></div></div></div></div><div class="wrap h2body-exist"><div class="wrap-header h2wrap"><h2 id="杂项"><a aria-hidden="true" tabindex="-1" href="#杂项"><span class="icon icon-link"></span></a>杂项</h2><div class="wrap-body">
|
||||
</div></div><div class="h2wrap-body"><div class="wrap h3body-not-exist col-span-3"><div class="wrap-header h3wrap"><h3 id="常用-net-概念"><a aria-hidden="true" tabindex="-1" href="#常用-net-概念"><span class="icon icon-link"></span></a>常用 .NET 概念</h3><div class="wrap-body">
|
||||
<!--rehype:wrap-class=col-span-3-->
|
||||
|
||||
Reference in New Issue
Block a user