void ConvToCaps (string &input_str)
{
  ostringstream strout_str;
  for (unsigned int i = 0; i < input_str.length(); i++)
      {
        if (input_str[i] <= int(122) && input_str[i] >= int(97)) //See if char is lowercase
        {
          strout_str << char(input_str[i] - 32);      //Convert uppercase char to lowercase char
          input_str.replace(i, 1, strout_str.str());  //Replace lowercase part of str with
          strout_str.str(string());                   //Erase the stringstreams contents
        }                                             //uppercase equivalent
      }
}