C++ VC++ 字母转数字_数字转字母

//--------------------------------------------------------------------------- #include <vcl.h> #pragma hdrstop #include "untNumberToEnglishChar.h" //--------------------------------------------------------------------------- #pragma package(smart_init) AnsiString __fastcall NumberToEnglishChar(int Num) { AnsiString str = ""; AnsiString strReturn = ""; if (Num == 0) return ""; float f = (Num%26 == 0 ) ? 26 : Num%26; switch((int)f) { case 1: str = "A"; break; case 2: str = "B"; break; case 3: str = "C"; break; case 4: str = "D"; break; case 5: str = "E"; break; case 6: str = "F"; break; case 7: str = "G"; break; case 8: str = "H"; break; case 9: str = "I"; break; case 10: str = "J"; break; case 11: str = "K"; break; case 12: str = "L"; break; case 13: str = "M"; break; case 14: str = "N"; break; case 15: str = "O"; break; case 16: str = "P"; break; case 17: str = "Q"; break; case 18: str = "R"; break; case 19: str = "S"; break; case 20: str = "T"; break; case 21: str = "U"; break; case 22: str = "V"; break; case 23: str = "W"; break; case 24: str = "X"; break; case 25: str = "Y"; break; case 26: str = "Z"; break; } if (Num >= 26) { str = NumberToEnglishChar(((int)Num/26) - ((f==26) ? 1 : 0)) + str; } strReturn = str; return strReturn; } int __fastcall EnglishCharToNumber(AnsiString strEnglishChar) { AnsiString EnglishChar = strEnglishChar.UpperCase(); int L = EnglishChar.Length(); if (L == 0) return 0; int Num = 0; int iReturn = 0; char *c = new char[L]; strcpy(c,EnglishChar.c_str()); for(int i = 0; i < L; i++) { switch(c[i]) { case 'A': Num = 1; break; case 'B': Num = 2; break; case 'C': Num = 3; break; case 'D': Num = 4; break; case 'E': Num = 5; break; case 'F': Num = 6; break; case 'G': Num = 7; break; case 'H': Num = 8; break; case 'I': Num = 9; break; case 'J': Num = 10; break; case 'K': Num = 11; break; case 'L': Num = 12; break; case 'M': Num = 13; break; case 'N': Num = 14; break; case 'O': Num = 15; break; case 'P': Num = 16; break; case 'Q': Num = 17; break; case 'R': Num = 18; break; case 'S': Num = 19; break; case 'T': Num = 20; break; case 'U': Num = 21; break; case 'V': Num = 22; break; case 'W': Num = 23; break; case 'X': Num = 24; break; case 'Y': Num = 25; break; case 'Z': Num = 26; break; } iReturn += (Power(26,(L-1-i)))*Num; } return iReturn; }