# 03 变量(Variable)

{% hint style="danger" %}

#### 译者提示

您应该清楚“**变量**”由**变量名**、**变量值**、**变量所在内存地址**组成，而不是囫囵吞枣地称“变量、变量、变量...”。

尤其是在支持指针的编程语言中，**随时记得“名、值、地址”的区别**，非常有助于理解代码。
{% endhint %}


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