Set precision of std::to_string when converting floating point values [duplicate]
There is no way to change the precision via to_string() but the setprecision IO manipulator could be used instead: #include <sstream> template <typename T> std::string to_string_with_precision(const T a_value, const int n = 6) { std::ostringstream out; out.precision(n); out << std::fixed << a_value; return out.str(); }