Re: C++ way to convert ASCII digits to Integer?

Yes that was it, and here are the two functions that I
derived from this:

#include <string>
#include <sstream>

int stringToInteger(std::string s)
{
  int Integer;
  std::stringstream sstr;
  sstr << s;
  sstr >> Integer;
  return Integer;
}

double stringToDouble(std::string s)
{
  double Double;
  std::stringstream sstr;
  sstr << s;
  sstr >> Double;
  return Double;
}

<andreas.koestler@googlemail.com> wrote in message
news:5bb33290-694a-4942-a9f0-1c6084c308b7@x1g2000prh.googlegroups.com...
On May 27, 9:18 am, "Peter Olcott" <NoS...@SeeScreen.com>
wrote:


I don't know what you mean by 'clean C++ way' but one way to
do it is:
int ascii_digit_to_int ( const char asciidigit ) {
  if ( asciidigit < '0' ||
       asciidigit > '9' ) {
    throw NotADigitException();
  }
  return (int) asciidigit - 48; // 48 => '0'
}
Or you can use atoi or similar.
Or you use the std::stringstream:

std::stringstream sstr("3");
int value;
sstr >> value;

Hope that helps
Andreas