如何声明一个变量 怎样用Dim语句声明变量？
怎样用Dim语句声明变量？
Dim是定义一个变量，相当于关键字private。此外，还有一个公共关键字。定义变量的方法是：dim variable as variable type[dim的起源]。在basic语言中，通过定义数组的大小，可以使用dim。英文全名是dimension，中文意思是size。
在VB中，扩展名dim用来定义变量
Python没有私有变量，任何定义的变量都可以直接调用，但一般来说，在定义的变量前后加两个下划线，并将这些变量作为私有变量处理，如以下代码所示：
class person:defuuuuu inituuuuu（self）：self.uuuu privateuuuuuu=100p=person（）print（“uuuuu privateuuuuuuuuuuuuuuuuu:”，p.uuuuu privateuuuuuuuu）print（“p contains variables:”，（P）输入：输出：输出：输出：本公司的私营私营部门：100p包含变量：100p包含的输出：输出：输出：输出：输出：输出：输出：输出：输出：输出：输出：输出：100 P包含变量：包括“uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu100p包含变量：[“uuuuclass class classu ”、“ uuuuuclass class class class classu ”、、“ uuuuuuDELuuuuuuuuuclassclass”、“、、、、、““uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuclassclassclassclassclassuuuuuuuu“，”初始化“，”乐“，”lt“，”模块“，”模块目前，中国的经济UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU““““““““““，，，，，，，，，，，，，，，““““““它自己。它们对其他类实例不可见或不可用，反射除外
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