What is the opposite of "fixed" in cout?

Question

When using cout , what is the default format defined in the <iomanip> header? In other words, once I set my fixed formatter using cout << fixed << setPrecision(2) , how do I change it? Or that I change it back?

Answer 1

The opposite of std::fixed is equal to std::scientific .

(You will find a good list of manipulators in this excellent answer .)

Answer 2

Answer: std::defaultfloat in C ++ 11. For this in C ++ 03 you can do

cout.unsetf(std::ios_base::floatfield);

See Really, what is the opposite of “fixed”? I / O manipulator?

Answer 3

You can use resetiosflags() to cancel any flags.

Answer 4

The opposite of std::fixed is equal to std::scientific . It can do for you.

However, if you want to restore more flags or if you need a previous state, instead of the default, you can use the best solutions:

• the std::resetiosflags allows you to reset certain flags by default;

• two ios::flags functions allow you to save and restore the previous values ​​of format flags.