# include & lt; Stdio. H> 
# include & lt; Unistd. H> 
Int main (void) 
{
Int x=0; 
Int pid=vfork (); 
if (! Pid) 
{
Printf (" the child process output x: % d \ n ", x); 
X++; 
exit(0); 
} 
The else 
{
Printf (" the parent process output x: % d \ n ", x); 
X++; 
} 
return 0; 
} 

 
The results 
The child process output x: 0 
The parent process output x: 0 
The Program ended with exit code: 0