logging problem ?

hi,
how do i log. i tried the way in main.cpp in doc. at the top of my
main.cpp i put in

#define DEBUG 1
#if DEBUG
ofstream gLogFile("/home/blah/blah/cgicc.log",std::ios::app);//also tried
gLogFile("cgicc.log", ios::app)
#endif
main()
{
.
.
assert(gLogFile);//gives internal server error!
}

Could not find the file cgicc.log anywhere on the pc.
Thanks,
Neeraj Korde
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Graduate Student
Mechanical Engineering
University of Michigan
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