https://blue-sky.tech/series/c-%E8%AF%AD%E8%A8%80%E7%A8%8B%E5%BA%8F%E8%AE%BE%E8%AE%A1%E7%AC%94%E8%AE%B0/Recent content in C 语言程序设计笔记 on Blue_Sky蓝天计划Hugo -- gohugo.iozh-cn3465179943@qq.com (Li)3465179943@qq.com (Li)© 2025 嵌入式开发者博客. 保留所有权利.https://blue-sky.tech/notes/c-cpp/c/c%E8%AF%AD%E8%A8%80%E7%A8%8B%E5%BA%8F%E8%AE%BE%E8%AE%A1/p3-%E6%A0%BC%E5%BC%8F%E5%8C%96%E8%BE%93%E5%85%A5%E8%BE%93%E5%87%BA-1/Mon, 01 Jan 0001 00:00:00 +00003465179943@qq.com (Li)https://blue-sky.tech/notes/c-cpp/c/c%E8%AF%AD%E8%A8%80%E7%A8%8B%E5%BA%8F%E8%AE%BE%E8%AE%A1/p3-%E6%A0%BC%E5%BC%8F%E5%8C%96%E8%BE%93%E5%85%A5%E8%BE%93%E5%87%BA-1/<hr> <h1 class="relative group">知识点 <div id="知识点" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e7%9f%a5%e8%af%86%e7%82%b9" aria-label="锚点">#</a> </span> </h1> <h2 class="relative group">2.1 <strong>常量, 变量, 整形, 实型, 字符型</strong> <div id="21-常量-变量-整形-实型-字符型" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#21-%e5%b8%b8%e9%87%8f-%e5%8f%98%e9%87%8f-%e6%95%b4%e5%bd%a2-%e5%ae%9e%e5%9e%8b-%e5%ad%97%e7%ac%a6%e5%9e%8b" aria-label="锚点">#</a> </span> </h2> <ul> <li>@ 数据类型图 <ul> <li>![[P1 数据类型.canvas|P1 数据类型]]</li> </ul> </li> </ul> <h3 class="relative group">2.1.2 每种数据类型<strong>所占内存大小及取值范围</strong> <div id="212-每种数据类型所占内存大小及取值范围" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#212-%e6%af%8f%e7%a7%8d%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b%e6%89%80%e5%8d%a0%e5%86%85%e5%ad%98%e5%a4%a7%e5%b0%8f%e5%8f%8a%e5%8f%96%e5%80%bc%e8%8c%83%e5%9b%b4" aria-label="锚点">#</a> </span> </h3> <table> <thead> <tr> <th>数据类型</th> <th>32 位系统（字节）</th> <th>64 位系统</th> <th>最小值</th> <th>最大值</th> </tr> </thead> <tbody> <tr> <td><code>char</code></td> <td>1</td> <td>1</td> <td><code>-128</code></td> <td><code>127</code></td> </tr> <tr> <td><code>short</code></td> <td>2</td> <td>2</td> <td><code>-32767</code></td> <td><code>32768</code></td> </tr> <tr> <td><code>unsigned short</code></td> <td>2</td> <td>2</td> <td><code>0</code></td> <td><code>65536</code></td> </tr> <tr> <td><code>int</code></td> <td>4</td> <td>4</td> <td><code>-2147483648</code></td> <td><code>2147483647</code></td> </tr> <tr> <td><code>unsigned int</code></td> <td>4</td> <td>4</td> <td><code>0</code></td> <td><code>4294967295</code></td> </tr> <tr> <td><code>float</code></td> <td>4</td> <td>4</td> <td></td> <td></td> </tr> <tr> <td><code>double</code></td> <td>8</td> <td>8</td> <td></td> <td></td> </tr> <tr> <td><code>long</code></td> <td>4</td> <td>8</td> <td><code>-2147483648</code></td> <td><code>2147483647</code></td> </tr> <tr> <td><code>long long</code></td> <td>8</td> <td>8</td> <td><code>-9223372036854775807</code></td> <td><code>9223372036854775808</code></td> </tr> <tr> <td><code>unsigned long long</code></td> <td>8</td> <td>8</td> <td><code>0</code></td> <td><code>18446744073709551615</code></td> </tr> </tbody> </table> <h3 class="relative group">2.1.3 常量和变量 <div id="213-常量和变量" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#213-%e5%b8%b8%e9%87%8f%e5%92%8c%e5%8f%98%e9%87%8f" aria-label="锚点">#</a> </span> </h3> <blockquote> <p>[!Note] 常量和变量</p>