在編程的過程中，往往會涉及到一些常見的數據類型之間的相互轉化，到網上一查，大家真是眾說風云，讓人甚是眼花繚亂，找了半天也找不到自己想要的答案。下面結合實例詳細說明幾種數據類型之間的轉換方法（**完整的實例程序可在我的CSDN資源中下載:[http://download.csdn.net/detail/margin1988/4241292](http://download.csdn.net/detail/margin1988/4241292)**）： （1）CString ->?int ~~~ CString intStr="100"; int a; a = _ttoi(intStr); ~~~ （2）int?->?CString ~~~ CString aStr; aStr.Format("%d",a); ~~~ （3）CString?->?double ~~~ CString doubleStr="3.1415926"; double b; b = atof(doubleStr.GetBuffer(0)); ~~~ （4）double?->?CString ~~~ CString bStr; bStr.Format("%0.4f",b);//保留小數點后4位 ~~~ （5）CString?->?LPCSTR ~~~ LPCSTR lpcStr; CString cStr; int c=1389; cStr.Format("%d",c); lpcStr = _T(cStr); ~~~ （6）LPCSTR?->?CString ~~~ CString dStr; dStr = lpcStr; ~~~ （7）char*?->?CString ~~~ char* cha1="你好"; CString str1; str1 = cha1;//str1.Format("%s",cha1); ~~~ （8）CString?->?char* ~~~ CString str2; char* cha2; str2.Format("很好"); cha2 = str2.GetBuffer(0); ~~~ （9）char -> CString ~~~ char ch = 'a'; CString str3; str3.Format("%c",ch); ~~~ （10）string -> const char* ~~~ string s = "你好"; const char* cha3; cha3 = s.c_str(); ~~~ （11）CString ->?wchar_t ~~~ wchar_t wStr[256]; CString str0; str0 = "姓名"; MultiByteToWideChar(CP_ACP, 0, str0, -1, wStr, 256); ~~~ （12）?wchar_t ->?CString ~~~ wchar_t wStr[256]; CString str0; int size; char *ch; size=WideCharToMultiByte(CP_ACP,0,sheet->Cell(i,1)->GetWString(),-1,NULL,0,NULL,NULL); ch=new char[size+1]; WideCharToMultiByte(CP_ACP,0,sheet->Cell(i,1)->GetWString(),-1,ch,size,NULL,NULL); str0.Format("%s",ch); size = 0; delete[] ch; ~~~