Header files in c++

Question

what are the header files to be included compulsively while writing C++ program?

Answer 1

Mine in descending order:

<iostream>
<cstring>
<cstdlib>
<cmath>
<algorithm>
<windows.h> // shhh...
<conio.h> // shhhhhhhhh...

Answer 2

please add this also
string.h
iomanip.h
stdio.h
ctype.h