VB中各种进制的转换.doc

VB中各种进制的转换 发表于 2007-3-2 16:31:39 - 用途：将十进制转化为二进制 输入：Dec(十进制数) 输入数据类型：Long 输出：DEC_to_BIN(二进制数) 输出数据类型：String 输入的最大数为2147483647,输出最大数为1111111111111111111111111111111(31个1)Public Function DEC_to_BIN(Dec As Long) As StringDEC_to_BIN = Do While Dec 0DEC_to_BIN = Dec Mod 2 & DEC_to_BINDec = Dec 2LoopEnd Function 用途：将二进制转化为十进制 输入：Bin(二进制数) 输入数据类型：String 输出：BIN_to_DEC(十进制数) 输出数据类型：Long 输入的最大数为1111111111111111111111111111111(31个1),输出最大数为2147483647Public Function BIN_to_DEC(ByVal Bin As String) As LongDim i As LongFor i = 1 To Len(Bin)BIN_to_DEC = BIN_to_DEC * 2 + Val(Mid(Bin, i, 1)Next iEnd Function 用途：将十六进制转化为二进制 输入：Hex(十六进制数) 输入数据类型：String 输出：HEX_to_BIN(二进制数) 输出数据类型：String 输入的最大数为2147483647个字符Public Function HEX_to_BIN(ByVal Hex As String) As StringDim i As LongDim B As StringHex = UCase(Hex)For i = 1 To Len(Hex)Select Case Mid(Hex, i, 1)Case 0: B = B & 0000Case 1: B = B & 0001Case 2: B = B & 0010Case 3: B = B & 0011Case 4: B = B & 0100Case 5: B = B & 0101Case 6: B = B & 0110Case 7: B = B & 0111Case 8: B = B & 1000Case 9: B = B & 1001Case A: B = B & 1010Case B: B = B & 1011Case C: B = B & 1100Case D: B = B & 1101Case E: B = B & 1110Case F: B = B & 1111End SelectNext iWhile Left(B, 1) = 0B = Right(B, Len(B) - 1)WendHEX_to_BIN = BEnd Function 用途：将二进制转化为十六进制 输入：Bin(二进制数) 输入数据类型：String 输出：BIN_to_HEX(十六进制数) 输出数据类型：String 输入的最大数为2147483647个字符Public Function BIN_to_HEX(ByVal Bin As String) As StringDim i As LongDim H As StringIf Len(Bin) Mod 4 0 ThenBin = String(4 - Len(Bin) Mod 4, 0) & BinEnd IfFor i = 1 To Len(Bin) Step 4Select Case Mid(Bin, i, 4)Case 0000: H = H & 0Case 0001: H = H & 1Case 0010: H = H & 2Case 0011: H = H & 3Case 0100: H = H & 4Case 0101: H = H & 5Case 0110: H = H & 6Case 0111: H = H & 7Case 1000: H = H & 8Case 1001: H = H & 9Case 1010: H = H & ACase 1011: H = H & BCase 1100: H = H & CCase 1101: H = H & DCase 1110: H = H & ECase 1111: H = H & FEnd SelectNext iWhile Left(H, 1) = 0H = Right(H, Len(H) - 1)WendBIN_to_HEX = HEnd Function 用途：将十六进制转化为十进制 输入：Hex(十六进制数) 输入数据类型：String 输出：HEX_to_DEC(十进制数) 输出数据类型：Long 输入的最大数为7FFFFFFF,输出的最大数为2147483647Public Function HEX_to_DEC(ByVal Hex As String) As LongDim i As LongDim B As LongHex = UCase(Hex)For i = 1 To Len(Hex)Select Case Mid(Hex, Len(Hex) - i + 1, 1)Case 0: B = B + 16 (i - 1) * 0Case 1: B = B + 16 (i - 1) * 1Case 2: B = B + 16 (i - 1) * 2Case 3: B = B + 16 (i - 1) * 3Case 4: B = B + 16 (i - 1) * 4Case 5: B = B + 16 (i - 1) * 5Case 6: B = B + 16 (i - 1) * 6Case 7: B = B + 16 (i - 1) * 7Case 8: B = B + 16 (i - 1) * 8Case 9: B = B + 16 (i - 1) * 9Case A: B = B + 16 (i - 1) * 10Case B: B = B + 16 (i - 1) * 11Case C: B = B + 16 (i - 1) * 12Case D: B = B + 16 (i - 1) * 13Case E: B = B + 16 (i - 1) * 14Case F: B = B + 16 (i - 1) * 15End SelectNext iHEX_to_DEC = BEnd Function 用途：将十进制转化为十六进制 输入：Dec(十进制数) 输入数据类型：Long 输出：DEC_to_HEX(十六进制数) 输出数据类型：String 输入的最大数为2147483647,输出最大数为7FFFFFFFPublic Function DEC_to_HEX(Dec As Long) As StringDim a As StringDEC_to_HEX = Do While Dec 0a = CStr(Dec Mod 16)Select Case aCase 10: a = ACase 11: a = BCase 12: a = CCase 13: a = DCase 14: a = ECase 15: a = FEnd SelectDEC_to_HEX = a & DEC_to_HEXDec = Dec 16LoopEnd Function 用途：将十进制转化为八进制 输入：Dec(十进制数) 输入数据类型：Long 输出：DEC_to_OCT(八进制数) 输出数据类型：String 输入的最大数为2147483647,输出最大数ublic Function DEC_to_OCT(Dec As Long) As StringDEC_to_OCT = Do While Dec 0DEC_to_OCT = Dec Mod 8 & DEC_to_OCTDec = Dec 8LoopEnd Function 用途：将八进制转化为十进制 输入：Oct(八进制数) 输入数据类型：String 输出：OCT_to_DEC(十进制数) 输出数据类型：Long 输入的最大数输出的最大数为2147483647Public Function OCT_to_DEC(ByVal Oct As String) As LongDim i As LongDim B As LongFor i = 1 To Len(Oct)Select Case Mid(Oct, Len(Oct) - i + 1, 1)Case 0: B = B + 8 (i - 1) * 0Case 1: B = B + 8 (i - 1) * 1Case 2: B = B + 8 (i - 1) * 2Case 3: B = B + 8 (i - 1) * 3Case 4: B = B + 8 (i - 1) * 4Case 5: B = B + 8 (i - 1) * 5Case 6: B = B + 8 (i - 1) * 6Case 7: B = B + 8 (i - 1) * 7End SelectNext iOCT_to_DEC = BEnd Function 用途：将二进制转化为八进制 输入：Bin(二进制数) 输入数据类型：String 输出：BIN_to_OCT(八进制数) 输出数据类型：String 输入的最大数为2147483647个字符Public Function BIN_to_OCT(ByVal Bin As String) As StringDim i As LongDim H As StringIf Len(Bin) Mod 3 0 ThenBin = String(3 - Len(Bin) Mod 3, 0) & BinEnd IfFor i = 1 To Len(Bin) Step 3Select Case Mid(Bin, i, 3)Case 000: H = H & 0Case 001: H = H & 1Case 010: H = H & 2Case 011: H = H & 3Case 100: H = H & 4Case 101: H = H & 5Case 110: H = H & 6Case 111: H = H & 7End SelectNext iWhile Left(H, 1) = 0H = Right(H, Len(H) - 1)WendBIN_to_OCT = HEnd Function 用途：将八进制转化为二进制 输入：Oct(八进制数) 输入数据类型：String 输出：OCT_to_BIN(二进制数) 输出数据类型：String 输入的最大数为2147483647个字符Public Function OCT_to_BIN(ByVal Oct As String) As StringDim i As LongDim B As StringFor i = 1 To Len(Oct)Select Case Mid(Oct, i, 1)Case 0: B = B & 000Case 1: B = B & 001Case 2: B = B & 010Case 3: B = B & 011Case 4: B = B & 100Case 5: B = B & 101Case 6: B = B & 110Case 7: B = B & 111End SelectNext iWhile Left(B, 1) = 0B = Right(B, Len(B) - 1)WendOCT_to_BIN = BEnd Function 用途：将八进制转化为十六进制 输入：Oct(八进制数) 输入数据类型：String 输出：OCT_to_HEX(十六进制数) 输出数据类型：String 输入的最大数为2147483647个字符Public Function OCT_to_HEX(ByVal Oct As String) As StringDim Bin As StringBin = OCT_to_BIN(Oct)OCT_to_HEX = BIN_to_HEX(Bin)End Function 用途：将十六进制转化为八进制 输入：Hex(十六进制数) 输入数据类型：String 输出：HEX_to_OCT(八进制数) 输出数据类型：String 输入的最大数为2147483647个字符Public Function HEX_to_OCT(By