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如何编写一个小数转换分数的函数？

时间：2022-06-18 05:32 编辑：来源：阅读：
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摘要：如何编写一个小数转换分数的函数？

Public Function XtoF(str As Currency, Optional fenm As Integer = 32) As String

' 只限于整除分数. Dim Cfm As Currency Dim cfmmod As Integer On Error GoTo Erroreof Cfm = 1 / fenm XtoF = "" If str = 0 Then XtoF = "": Exit Function Dim point As Integer Dim dInt As String Dim dPoint As Currency Dim fint, fint1, fint2 As Integer If str <> 0 Then If str > 1 Then point = InStr(1, str, ".", 1) If point = 0 Then XtoF = str: Exit Function Else dInt = Mid(str, 1, point - 1) dPoint = CCur("0." & Mid(str, point + 1)) fint = InStr(1, XtoF(dPoint), "/", 1) fint1 = CInt(Mid(XtoF(dPoint), 1, fint - 1)) fint2 = CInt(Mid(XtoF(dPoint), fint + 1)) XtoF = CStr(dInt * fint2 + fint1) & "/" & CStr(fint2) End If Else If fenm Mod CInt(str / Cfm) = 0 Then XtoF = "1/" + CStr(fenm / CInt(str / Cfm)) Else cfmmod = Maxgys(fenm, CInt(str / Cfm)) XtoF = CStr(CInt(str / Cfm / cfmmod)) + "/" + CStr(CInt(fenm / cfmmod)) End If End If Else XtoF = "0" End If Exit Function Erroreof: XtoF = "" End Function Function Maxgys(num1 As Integer, num2 As Integer) As Integer Dim minnum, i As Integer minnum = num1 If num1 > num2 Then minnum = num2 For i = 1 To minnum If ((num1 Mod i) = 0) And ((num2 Mod i) = 0) Then Maxgys = i Next i End Function

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