string -> CString
CString.format("%s", string.c_str());
char -> CString
CString.format("%s", char*);
char -> string
string s(char *);
string -> char *
char *p = string.c_str();
CString -> string
string s(CString.GetBuffer());
CString str="100000";
str.SetAt(3,'1');
GetLength(); 获得你所处的位置之后 进行修改!
520*9