vba自定义function大全
时间: 2023-12-31 09:02:21 浏览: 42
VBA自定义函数是一种在Excel中使用VBA编程语言创建的自定义公式。通过定义自己的函数,可以扩展Excel的功能,使其能够执行一些原生公式无法实现的特定计算或处理。以下是一些常用的VBA自定义函数的示例:
1. 计算两个数的和:
```
Function Sum(a As Double, b As Double) As Double
Sum = a + b
End Function
```
2. 计算指定范围内的数字之和:
```
Function SumRange(rng As Range) As Double
Dim cell As Range
For Each cell In rng
SumRange = SumRange + cell.Value
Next cell
End Function
```
3. 判断一个数是否为偶数:
```
Function IsEven(num As Integer) As Boolean
If num Mod 2 = 0 Then
IsEven = True
Else
IsEven = False
End If
End Function
```
4. 将一个字符串中的所有字符转换为大写:
```
Function Uppercase(str As String) As String
Uppercase = UCase(str)
End Function
```
5. 判断一个数是否为质数:
```
Function IsPrime(num As Integer) As Boolean
Dim i As Integer
Dim count As Integer
count = 0
For i = 1 To num
If num Mod i = 0 Then
count = count + 1
End If
Next i
If count = 2 Then
IsPrime = True
Else
IsPrime = False
End If
End Function
```
以上只是一些VBA自定义函数的示例,你可以根据具体需要编写更加复杂的自定义函数,扩展Excel的功能,满足特定的计算或处理要求。