// to_string example #include // std::cout #include // std::string, std::to_string int main () { std::string pi = "pi is " + std::to_string(3.1415926); std::string perfect = std::to_string(1+2+4+7+14) + " is a perfect number"; std::cout << pi << '\n'; std::cout << perfect << '\n'; return 0; }
std::ostringstream strs; strs << dbl; std::string str = strs.str();