What is this error?

[aadipa]

I crated one Splitter window project and a Tree visualization project in VC++. When i compited them sepatarely, i got no errors, but when i added all .cpp and .h files from tree project to splitter project i am getting following errors

--------------------Configuration: Splitscreen - Win32 Debug--------------------
Compiling...
BinaryTree.cpp
c:\vs projects\msc\ashish\splitscreen\binarytree.cpp(72) : fatal error C1010: unexpected end of file while looking for precompiled header directive
GeneralTree.cpp
c:\vs projects\msc\ashish\splitscreen\generaltree.cpp(60) : fatal error C1010: unexpected end of file while looking for precompiled header directive
HDDReader.cpp
c:\vs projects\msc\ashish\splitscreen\hddreader.cpp(56) : fatal error C1010: unexpected end of file while looking for precompiled header directive
HDDTree.cpp
c:\vs projects\msc\ashish\splitscreen\hddtree.cpp(85) : fatal error C1010: unexpected end of file while looking for precompiled header directive
Point.cpp
c:\vs projects\msc\ashish\splitscreen\point.cpp(21) : fatal error C1010: unexpected end of file while looking for precompiled header directive
Rectangle.cpp
c:\vs projects\msc\ashish\splitscreen\rectangle.cpp(23) : fatal error C1010: unexpected end of file while looking for precompiled header directive
Treemap.cpp
c:\vs projects\msc\ashish\splitscreen\treemap.cpp(123) : fatal error C1010: unexpected end of file while looking for precompiled header directive
Generating Code...
Error executing cl.exe.

Splitscreen.exe - 7 error(s), 0 warning(s)


What to do?
I am using VC++ 6.0 Enterprise Edition

[El-idioto]

If you use pre-compiled headers you need to include "stdafx.h"

If you still have trouble, set 'Automatically generate' in the C/C++ menu, Pre-compiled headers sub-menu.