Deployed 5c9a876 with MkDocs version: 1.6.1

cpp/04-指针与引用-理解内存与地址/index.html

@@ -2028,7 +2028,7 @@ <h2 id="4-reference">4. 引用（reference）：给同一个变量起“别名
 <li>规则/坑点：引用必须在定义时绑定到一个对象；绑定后不能再改绑</li>
 </ul>
 <p>可运行例子：</p>
-<div class="language-cpp highlight"><pre><span></span><code><span id="__span-3-1"><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a><span class="cp">#include</span><span class="w"> </span><span class="cpf">&lt;iostream&gt;</span>
+<p><div class="language-cpp highlight"><pre><span></span><code><span id="__span-3-1"><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a><span class="cp">#include</span><span class="w"> </span><span class="cpf">&lt;iostream&gt;</span>
 </span><span id="__span-3-2"><a id="__codelineno-3-2" name="__codelineno-3-2" href="#__codelineno-3-2"></a>
 </span><span id="__span-3-3"><a id="__codelineno-3-3" name="__codelineno-3-3" href="#__codelineno-3-3"></a><span class="kt">int</span><span class="w"> </span><span class="nf">main</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
 </span><span id="__span-3-4"><a id="__codelineno-3-4" name="__codelineno-3-4" href="#__codelineno-3-4"></a><span class="w">    </span><span class="kt">int</span><span class="w"> </span><span class="n">x</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">10</span><span class="p">;</span>
@@ -2040,6 +2040,10 @@ <h2 id="4-reference">4. 引用（reference）：给同一个变量起“别名
 </span><span id="__span-3-10"><a id="__codelineno-3-10" name="__codelineno-3-10" href="#__codelineno-3-10"></a><span class="w">    </span><span class="k">return</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
 </span><span id="__span-3-11"><a id="__codelineno-3-11" name="__codelineno-3-11" href="#__codelineno-3-11"></a><span class="p">}</span>
 </span></code></pre></div>
+int&amp; r = x;
+这是重点。
+- int&amp; 表示 引用类型
+- r 是 x 的引用,可以理解为：r 是 x 的别名</p>
 <p>你会看到 <code>x</code> 和 <code>r</code> 永远同步变化，因为它们是同一块数据。</p>
 <hr />
 <h2 id="5">5. 用引用修复“值传递改不动”的问题<a class="headerlink" href="#5" title="Permanent link">&para;</a></h2>