Modern C++ Programming Cookbook

How to do it...

To write a monetary value to an output stream, you should do the following:

• Set the desired locale for controlling the monetary format:

        std::cout.imbue(std::locale("en_GB.utf8"));

• Use either a long double or a std::basic_string value for the amount:

        long double mon = 12345.67;        std::string smon = "12345.67";

• Use a std::put_money manipulator with a single argument, the monetary value, to display the value using the currency symbol (if any is available):

        std::cout << std::showbase << std::put_money(mon)                   << std::endl; // £123.46        std::cout << std::showbase << std::put_money(smon)                   << std::endl; // £123.46

• Use std::put_money with two arguments, the monetary value and Boolean flag set to true, to indicate the use of ...