Thread: String conversion to floating point[Digit grouping]

Im currently facing an issue and can't find the information about this, the problem is my applications needs to be locale independent.
When accessing a database i get a string representing a number for e.g:

"123.456.789,30"

now the dot is the digit grouping sign for my current locale, and as i found from
several google searchs, atof doesn't consider the current locale digit group symbol.

Now to the question is there any standard C/C++ function which does consider the digit grouping symbol in conversion from a string to a fp value ?

Thks very much for any help/feedback

The locale functionality in the standard library will do it.

Code:

#include <locale>
#include <iostream>
#include <sstream>

int main()
{
    std::istringstream funkynumber("123.456.789,30");
    double asDouble = 0.0;
    std::locale loc("Dutch"); // first locale I found with dots as thousands separator
    funkynumber.imbue(loc);
    funkynumber >> asDouble;
    std::cout << "As string: " << str.str() << '\n';
    std::cout << "As double: " << std::fixed << asDouble << std::endl;
}

Originally Posted by adeyblue

The locale functionality in the standard library will do it.

Code:

#include <locale>
#include <iostream>
#include <sstream>

int main()
{
    std::istringstream funkynumber("123.456.789,30");
    double asDouble = 0.0;
    std::locale loc("Dutch"); // first locale I found with dots as thousands separator
    funkynumber.imbue(loc);
    funkynumber >> asDouble;
    std::cout << "As string: " << str.str() << '\n';
    std::cout << "As double: " << std::fixed << asDouble << std::endl;
}

Thanks adeyblue, i didin't wan't to reinvent the wheel :P