Question

I am working on a internationalization project. Do other languages, such as Arabic or Chinese, use different representations for digits besides 0-9? If so, are there versions of atoi() that will account for these other representations?

I should add that I am mainly concerned with parsing input from the user. If the users types in some other representation I want to be sure that I recognize it as a number and treat it accordingly.

Answer 1

I may use std::wistringstream and locale to generate this integer.

#include <sstream>
#include <locale>
using namespace std;

int main()
{
  locale mylocale("en-EN"); // Construct locale object with the user's default preferences
  wistringstream wss(L"1");  // your number string
  wss.imbue( mylocale );    // Imbue that locale
  int target_int = 0;
  wss >> target_int;
  return 0;
}

More info on stream class and on locale class.