Q on porting C/C++ code(Precompiler def)

[tecknophreak]

I've got a program for linux which has a few headers which need to be changed so that it'll compile on VC++. Is there a precompiler def to check to see if the OS is Linux or Windows? Looking to do something like:

#ifdef __LINUX__

#include <sys/types.h>
#include <sys/socket.h>

#else // WINDOWS

#include <winsock.h>

#endif

First time taking code to a windows box which actually needs to be changed to work on windows. :(

[Stuka]

There is - _WIN32 is defined for 32 bit windows systems.

[tecknophreak]

Excellent, thank you.

[bwkaz]

And either _UNIX_, __UNIX__, __unix__, or some variant of that shoud be defined on most Unix-like compilers (gcc does define __unix__).