#include <io.h> 
#include <fcntl.h> 
#include <sys\stat.h> 
#include <process.h> 
#include <share.h> 
#include <stdio.h> 

int main(void) 
{ 
   int handle; 
   int status; 

   handle = sopen("c:\\autoexec.bat", O_RDONLY, SH_DENYNO, S_IREAD); 

   if (!handle) 
   { 
      printf("sopen failed\n"); 
      exit(1); 
   } 

   status = access("c:\\autoexec.bat", 6); 
   if (status == 0) 
      printf("read/write access allowed\n"); 
   else 
      printf("read/write access not allowed\n"); 

   close(handle); 
   return 0; 
}