I add file C to C++ project. They show error massage.

I add this file
Mytest.h and Mytest.c

Mytest.h have this detail

#ifdef __cplusplus
extern "C" {
#endif

int TestMe(int, int);

#ifdef __cplusplus
}
#endif


Mytest.c have this detail

#include "Mytest.h"

int TestMe(int x, int y)
{
return x+y;
}

I use Visual C++ 6.0 add this C file to my C++ project . There are error message like this

--------------------Configuration: BExtract - Win32 Debug--------------------
Compiling...
Mytest.c
e:\microcomputer\mytest.c(10) : fatal error C1010: unexpected end of file while looking for precompiled header directive
Error executing cl.exe.
Creating browse info file...
BSCMAKE: error BK1506 : cannot open file '.\Debug\Mytest.sbr': No such file or directory
Error executing bscmake.exe.

BExtract.exe - 2 error(s), 0 warning(s)

Do you know the reason of error? How to solve the problem?