推荐回答(3个)
VBA共有12种数据类型,具体见下表,此外用户还可以根据以下类型用Type自定义数据类型。
数据类型 类型标识符 字 节
字符串型 String $ 字符长度(0-65400)
字节型 Byte 1
布尔型 Boolean 无 2
整数型 Integer % 2
长整数型 Long & 4
单精度型 Single ! 4
双精度型 Double # 8
日期型 Date 无 8 公元100/1/1-9999/12/31
货币型 Currency @ 8
小数点型 Decimal 无 14
变体型 Variant 无 以上任意类型,
可变对象型 Object 无 4
1)VBA允许使用未定义的变量,默认是变体变量。
2)在模块通用说明部份,加入 Option Explicit 语句可以强迫用户进行变量定义。
3)变量定义语句及变量作用域
Dim 变量as 类型 '定义为局部变量,如 Dim xyz as integer
Private 变量as 类型 '定义为私有变量,如 Private xyz as byte
Public 变量as 类型 '定义为公有变量,如 Public xyz as single
Global 变量as 类型 '定义为全局变量,如 Globlal xyz as date
Static 变量as 类型 '定义为静态变量,如 Static xyz as double
一般变量作用域的原则是,那部份定义就在那部份起作用,模块中定义则在该模块那作用。
VBA共有12种数据类型。
分别是:数据类型、字符串型、布尔型、整数型、长整数型、单精度型、双精度型、日期型、货币型、小数点型、变体型、可变对象型。
1)VBA允许使用未定义的变量,默认是变体变量。
2)在模块通用说明部份,加入 Option Explicit 语句可以强迫用户进行变量定义。
3)变量定义语句及变量作用域
Dim 变量as 类型定义为局部变量,如 Dim xyz as integer
Private 变量as 类型定义为私有变量,如 Private xyz as byte
Public 变量as 类型定义为公有变量,如 Public xyz as single
Global 变量as 类型定义为全局变量,如 Globlal xyz as date
Static 变量as 类型定义为静态变量,如 Static xyz as double
一般变量作用域的原则是,那部份定义就在那部份起作用,模块中定义则在该模块那作用。
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