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so i assume that it is not necessary to have it included.
But should i want to use setprecision(*), do i have to include the setiosflag(io::fixed | ios::showpoint.

Can someone throw some light on this line of code ...

setiosflag (ios::fixed | ios::showpoint)

and

setprecision(4)

I understand that C++ requires both a .h and a .cpp file.

.h file is for declaration while .cpp is where we insert all our functions.

I have written a .h file but is unable to compile using...