<iomanip.h> does not work

Question

I tried to include the iomanip library and make some tests on it, but the compiler does not even recognize the iomanip.h library. Someone can say why this happen?

Answer 1

I'm not familiar with the module but have done some tests in the codespace.

#include <iomanip>

compiles successfully. Try it without the ".h" and see how you get on.