Can someone help me ? I have just discover nehe''s website and begin to learn OpenGl with his tutorial and i allready encounteren problems during testing the codes of the tutorials. VC++ refused report this compiling error : lesson1.cpp c:\program files\microsoft visual studio\myprojects\essayons\lesson1.cpp(393) : fatal error C1010: unexpected end of file while looking for precompiled header directive Error executing cl.exe. lesson1.obj - 1 error(s), 0 warning(s) Can someone help me to resolve this problem ? Thank you.

You have choosed that u will use precompiled headers in your project.
In this case, u must include the "stdafx.h" file at the beginning of every cpp file.
Or you just disable precompiled headers