std::string formatting like sprintf

Question

I have to format std::string with sprintf and send it into file stream. How can I do this?

Answer 1

string doesn't have what you need, but std::stringstream does. Use a stringstream to create the string and then extract the string. Here is a comprehensive list on the things you can do. For example:

cout.setprecision(10); //stringstream is a stream like cout

will give you 10 decimal places of precision when printing a double or float.