Converting a number to/from an hex/string

資料來源:http://www.leunen.com/cbuilder/tips.html These little functions convert a number to an hex or to a string and vice versa. #include < sstream > #include < string > #include < exception > //--------------------------------------------------------------------------- // Convert a number to a string

template
std::string ToStr(const T &value)
{
  std::ostringstream oss;
  if(!(oss<
//---------------------------------------------------------------------------
// Convert a string to a number
template
T ToInt(const std::string &str)
{
  if(str.size()==0)return 0;
  std::istringstream iss(str);
  T result=0;
  if(!(iss>>std::dec>>result))throw exception("Invalid argument");
  return result;
}    
//---------------------------------------------------------------------------
// Convert an hex string to a number
template
T HexToInt(const std::string &str)
{
  if(str.size()==0)return 0;
  std::istringstream iss(str);
  T result=0;
  if(!(iss>>std::hex>>result))throw exception("Invalid argument");
  return result;
}
    //---------------------------------------------------------------------------
// Convert a number to an hex string
template
std::string ToHex(const T &value)
{
  std::ostringstream oss;
  if(!(oss<        發表人 - axsoft 於 2003/03/17  13:16:46