Question

I need to store a double as a string. I know I can use printf if I wanted to display it, but I just want to store it in a string variable so that I can store it in a map later (as the value, not the key).

Answer 1

The boost ™ way:

std::string str = boost::lexical_cast<std::string>(dbl); 

The Standard C++ way:

std::ostringstream strs; strs << dbl; std::string str = strs.str(); 

Note: Don’t forget #include <sstream>