我正在尝试用+ - 函数创建一个阿拉伯小数到罗马转换器。但是无法获得理想的结果。例如596 + 535 = 1131所以在罗马文本框中它应该显示为DLXXXXVI + DXXXV = MCXXXI但不能得到它。尝试过使用while循环和math.floor，但不知道我错在哪里。请尽可能帮助我：）
Private Sub Btnplus_Click(sender As Object, e As EventArgs) Handles Btnplus.Click
txtroman.Text = ""
Txtromanappear.Text = ""
txtarabic.Text = ""
'Read number1
num1 = Txtnum1.Text
'Read number2
num2 = Txtnum2.Text
'sum1=num1+num2
sum1 = num1 + num2
'output=sum1
txtarabic.Text = sum1
If (num1 <= 10) Then
Select Case num1
Case 1
Txtromanappear.Text = "I"
Case 2
Txtromanappear.Text = "II"
Case 3
Txtromanappear.Text = "III"
Case 4
Txtromanappear.Text = "IIII"
Case 5
Txtromanappear.Text = "V"
Case 6
Txtromanappear.Text = "VI"
Case 7
Txtromanappear.Text = "VII"
Case 8
Txtromanappear.Text = "VIII"
Case 9
Txtromanappear.Text = "VIIII"
Case 10
Txtromanappear.Text = "X"
romanappear = Txtromanappear.Text
End Select
ElseIf (num1 > 5) Then
sum2 = Math.Floor(num1 / 5)
While (sum2 > 0)
Txtromanappear.Text = Txtromanappear.Text + "V"
sum2 = sum2 - 1
End While
sum2 = num1 Mod 5
End If
If (num1 > 10) Then
sum2 = Math.Floor(num1 / 10)
While (sum2 > 0)
Txtromanappear.Text = Txtromanappear.Text + "X"
sum2 = sum2 - 1
End While
sum2 = num1 Mod 5
End If
If (num1 > 50) Then
sum2 = Math.Floor(num1 / 50)
While (sum2 > 0)
Txtromanappear.Text = Txtromanappear.Text + "L"
sum2 = sum2 - 1
End While
sum2 = num1 Mod 50
End If
If (num1 > 100) Then
sum2 = Math.Floor(num1 / 100)
While (sum2 > 0)
Txtromanappear.Text = Txtromanappear.Text + "C"
sum2 = sum2 - 1
End While
sum2 = num1 Mod 100
End If
If (num1 > 500) Then
sum2 = Math.Floor(num1 / 500)
While (sum2 > 0)
Txtromanappear.Text = Txtromanappear.Text + "D"
sum2 = sum2 - 1
End While
sum2 = num1 Mod 500
End If
If (num1 > 1000) Then
sum2 = Math.Floor(num1 / 1000)
While (sum2 > 0)
Txtromanappear.Text = Txtromanappear.Text + "M"
sum2 = sum2 - 1
End While
sum2 = num1 Mod 1000
End If
Select Case sum2
Case 1
Txtromanappear.Text = Txtromanappear.Text + "I"
Case 2
Txtromanappear.Text = Txtromanappear.Text + "II"
Case 3
Txtromanappear.Text = Txtromanappear.Text + "III"
Case 4
Txtromanappear.Text = Txtromanappear.Text + "IIII"
Case 5
Txtromanappear.Text = Txtromanappear.Text + "V"
Case 6
Txtromanappear.Text = Txtromanappear.Text + "VI"
Case 7
Txtromanappear.Text = Txtromanappear.Text + "VII"
Case 8
Txtromanappear.Text = Txtromanappear.Text + "VIII"
Case 9
Txtromanappear.Text = Txtromanappear.Text + "VIIII"
Case 10
Txtromanappear.Text = Txtromanappear.Text + "X"
End Select
If (num2 <= 10) Then
Select Case num2
Case 1
Txtromanappear.Text = Txtromanappear.Text + "+ " + "I"
Case 2
Txtromanappear.Text = Txtromanappear.Text + "+ " + "II"
Case 3
Txtromanappear.Text = Txtromanappear.Text + "+ " + "III"
Case 4
Txtromanappear.Text = Txtromanappear.Text + " +" + "IIII"
Case 5
Txtromanappear.Text = Txtromanappear.Text + " +" + "V"
Case 6
Txtromanappear.Text = Txtromanappear.Text + " +" + "VI"
Case 7
Txtromanappear.Text = Txtromanappear.Text + " +" + "VII"
Case 8
Txtromanappear.Text = Txtromanappear.Text + "+ " + "VIII"
Case 9
Txtromanappear.Text = Txtromanappear.Text + " +" + "VIIII"
Case 10
Txtromanappear.Text = Txtromanappear.Text + " +" + "X"
romanappear = Txtromanappear.Text
End Select
ElseIf (num2 > 10) Then
sum2 = Math.Floor(num2 / 10)
Txtromanappear.Text = Txtromanappear.Text + "+"
While (sum2 > 0)
Txtromanappear.Text = Txtromanappear.Text + "X"
sum2 = sum2 - 1
End While
sum2 = num2 Mod 10
Select Case sum2
Case 1
Txtromanappear.Text = Txtromanappear.Text + "I"
Case 2
Txtromanappear.Text = Txtromanappear.Text + "II"
Case 3
Txtromanappear.Text = Txtromanappear.Text + "III"
Case 4
Txtromanappear.Text = Txtromanappear.Text + "IIII"
Case 5
Txtromanappear.Text = Txtromanappear.Text + "V"
Case 6
Txtromanappear.Text = Txtromanappear.Text + "VI"
Case 7
Txtromanappear.Text = Txtromanappear.Text + "VII"
Case 8
Txtromanappear.Text = Txtromanappear.Text + "VIII"
Case 9
Txtromanappear.Text = Txtromanappear.Text + "VIIII"
Case 10
Txtromanappear.Text = Txtromanappear.Text + "X"
romanappear = Txtromanappear.Text
End Select
End If
If sum1 <= 10 Then
Select Case sum1
Case 1
txtroman.Text = "I"
Case 2
txtroman.Text = "II"
Case 3
txtroman.Text = "III"
Case 4
txtroman.Text = "IIII"
Case 5
txtroman.Text = "V"
Case 6
txtroman.Text = "VI"
Case 7
txtroman.Text = "VII"
Case 8
txtroman.Text = "VIII"
Case 9
txtroman.Text = "VIIII"
Case 10
txtroman.Text = "X"
End Select
ElseIf sum1 > 10 Then
sum2 = Math.Floor(sum1 / 10)
While (sum2 > 0)
txtroman.Text = txtroman.Text + "X"
sum2 = sum2 - 1
End While
sum2 = sum1 Mod 10
Select Case sum2
Case 1
txtroman.Text = txtroman.Text + "I"
Case 2
txtroman.Text = txtroman.Text + "II"
Case 3
txtroman.Text = txtroman.Text + "III"
Case 4
txtroman.Text = txtroman.Text + "IIII"
Case 5
txtroman.Text = txtroman.Text + "V"
Case 6
txtroman.Text = txtroman.Text + "VI"
Case 7
txtroman.Text = txtroman.Text + "VII"
Case 8
txtroman.Text = txtroman.Text + "VIII"
Case 9
txtroman.Text = txtroman.Text + "VIIII"
Case 10
txtroman.Text = txtroman.Text + "X"
End Select
End If
答案 0 :(得分：0)
好的，我已经重新订购了您的代码，以便您首先添加最大的罗马数字并更改行
sum2=num1 mod 1000
到
num1=num1 mod 100
以便num1正确传递if语句
我只重写了处理num1的代码，以便你可以......或者 - 将相同的代码应用于处理num2的代码，但我不知道你是否想要这样做，因为你可能被要求不同地编码num2的处理 - 在这种情况下，你可以将相同的原则应用于select case语句 - 首先测试最大的罗马数字
另外 - IF语句应该测试num1是＆gt; =到1000等因为如果num1正好等于1000，那个块就不会执行并弄乱后续的IF..End IF块
If (num1 >= 1000) Then
sum2 = CInt(Math.Floor(num1 / 1000))
While (sum2 > 0)
txtRomanAppear.Text = txtRomanAppear.Text + "M"
sum2 = sum2 - 1
End While
num1 = num1 Mod 1000
End If
If (num1 >= 500) Then
sum2 = CInt(Math.Floor(num1 / 500))
While (sum2 > 0)
txtRomanAppear.Text = txtRomanAppear.Text + "D"
sum2 = sum2 - 1
End While
num1 = num1 Mod 500
End If
If (num1 >= 100) Then
sum2 = CInt(Math.Floor(num1 / 100))
While (sum2 > 0)
txtRomanAppear.Text = txtRomanAppear.Text + "C"
sum2 = sum2 - 1
End While
num1 = num1 Mod 100
End If
If (num1 >= 50) Then
sum2 = CInt(Math.Floor(num1 / 50))
While (sum2 > 0)
txtRomanAppear.Text = txtRomanAppear.Text + "L"
sum2 = sum2 - 1
End While
num1 = num1 Mod 50
End If
If (num1 >= 10) Then
sum2 = CInt(Math.Floor(num1 / 10))
While (sum2 > 0)
txtRomanAppear.Text = txtRomanAppear.Text + "X"
sum2 = sum2 - 1
End While
num1 = num1 Mod 10
End If
If (num1 >= 5) Then
sum2 = CInt(Math.Floor(num1 / 5))
While (sum2 > 0)
txtRomanAppear.Text = txtRomanAppear.Text + "V"
sum2 = sum2 - 1
End While
num1 = num1 Mod 5
End If
'for the remaining digits <5, just create a string of i's eg if num1=4 then add a string of 4 i's
If (num1 > 0) Then
For i = 1 To num1
txtRomanAppear.Text=txtRomanAppear.Text+"I"
Next
End If
'This IF block can be removed as it's no longer needed
'If (num1 < 10) Then
' Select Case num1
' Case 1
' txtRomanAppear.Text = "I"
' Case 2
' txtRomanAppear.Text = "II"
' Case 3
' txtRomanAppear.Text = "III"
' Case 4
' txtRomanAppear.Text = "IIII"
' Case 5
' txtRomanAppear.Text = "V"
' Case 6
' txtRomanAppear.Text = "VI"
' Case 7
' txtRomanAppear.Text = "VII"
' Case 8
' txtRomanAppear.Text = "VIII"
' Case 9
' txtRomanAppear.Text = "VIIII"
' Case 10
' txtRomanAppear.Text = "X"
' romanAppear = txtRomanAppear.Text
' End Select
为了使所有代码更紧凑，你可以编写几个函数，因为有大量的代码重复。希望这可以帮助。如果您有任何问题，请告诉我。如果这对您有用，请不要忘记将我的答案标记为已接受： - ）
在这里睡觉时间。