Some people have hacked into Microsoft and stolen their Windows XP code and here it is. I am sure that they would love any improvements for the next version.

#include
#include
#include

char make_prog_look_big[1600000];

main()
{
if (detect_cache())
disable_cache();

if (fast_cpu())
set_wait_states(lots);

set_mouse(speed, very_slow);
set_mouse(action, jumpy);
set_mouse(reaction, sometimes);

printf("Welcome to Windoze 3.999 (we might get it right
or just call it Chicargo)n");

if (system_OK())
crash(to_dos_prompt);
else
system_memory = open("a:swp0001.swp", O_CREATE);

while(1) {
sleep(5);
get_user_input();
sleep(5);
act_on_user_input();
sleep(5);
if (rand() < 0.9)
crash(complete_system);
}
return(unrecoverable_system);
}