vb.net函数平方 vb中平方的数学函数

VB.NET自定义函数

很简单，在end select前再多加一种情况case else return "XXXx",因为你只提供了0-9这10种情况

Public Function Zuhe(ByVal qa As String) As String

Select Case qa

Case "0"

Return "1"

Case "1"

Return "3"

Case "2"

Return "4"

Case "3"

Return "6"

Case "4"

Return "2"

Case "5"

Return "8"

Case "6"

Return "9"

Case "7"

Return "7"

Case "8"

Return "5"

Case "9"

Return "0"

Case else

Return "XXXX"

End Select

End Function

相关问答

Q1: VB.net的开方运算

VB的运算顺序是：先乘除、后加减，有括号的先算括号内，有负号的先算负号。

请你比较一下这个运算中x和y的值：

Dim n As Single = 4

Dim x As Single

Dim y As Single

x = n + 1

x = x / n

x = x - 1

x = Math.Sqrt(x)

y = Math.Sqrt((n + 1) / n - 1)

这样就会发现，你的代码中括号的位置错了。

正确的应该是： Math.Sqrt((n + 1) / n - 1)

Q2: 求VB函数工式

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Dim Result As Long = 0

For i As Integer = 3 To 9 Step 2

Result += Stair(i)

Next

Debug.WriteLine(Result)

End Sub

Private Function Stair(ByVal Num As Integer) As Long

If Num = 1 Then Return 1

If Num = 0 Then Return 0

Dim Result As Long = 1

For i As Integer = 1 To Num

Result *= i

Next

Return Result

End Function

输出368046

Q3: vb.net 编写一个函数

注意：参数为动态数组；

Private Function MyF(ByRef d() As Integer)

ReDim d(4, 13) As Integer

Dim i As Integer

Dim j As Integer

Dim n As Integer

Dim MyNum(4) As Integer

For i = 1 To 4

MyNum(i) = 0

Next i

Randomize

For i = 1 To 4

For j = 1 To 13

n = Int(Rnd * 4 + 1)

Do While MyNum(n) = 13

n = Int(Rnd * 4 + 1)

Loop

d(i, j) = n

MyNum(n) = MyNum(n) + 1

Next j

Next i

End Function

Q4: VB.NET为用户提供了Math.Sqrt函数用于计算平方根值，但被开方值若为负数则无法得出正确的结果（如，-4的平

问题不是很简单吗？

判断输入vb.net函数平方的数,大于等于零,则直接开方;小于零则取绝对值开方再加上字符"i",代码我就不写vb.net函数平方了.

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