#if defined...

how does the #if defined command work?

well, it's look at during compilation.. and things are included or excluded depending on the result of the #if statement.

eg:

char name[] = "Uraldor";

#ifdef WIN32
MessageBox(NULL, name, "Hello", MB_OK);
#else
cout << "Hello Uraldor\n";
#endif

or maybe

#ifdef _DEBUG
printf("Error: %s\n", currentString);
#endif

these are not good examples, but you should get the idea

U.