Pre-processor abuse

gistfile1.cpp

#ifdef WIN32

WSADATA g_wsadata;
#define StartSocketLib WSAStartup( MAKEWORD(2, 2), &g_wsadata);
#define CloseSocketLib WSACleanup();

#else

#define StartSocketLib {} 
#define CloseSocketLib {}

#endif

/* Used later on like this: */

void main() {
    StartSocketLib;
    // do networky stuff
    CloseSocketLib;
}