Convert double to string using boost::lexical_cast in C++?

Question

I\' d like to use lexical_cast to convert a float to a string. Usually it works fine, but I have some problems with numbers without decimal. How can I fix numbe

Answer 1

If you need complex formatting, use std::ostringstream instead. boost::lexical_cast is meant for "simple formatting".

std::string
get_formatted_value(double d) {
    std::ostringstream oss;
    oss.setprecision(3);
    oss.setf(std::ostringstream::showpoint);
    oss << d;
    return oss.str();
}