12     printf("fd = %d\n", fd);  in main()
15     printf("stat size = %lu\n", sizeof(struct stat));  in main()
17     printf("====================\n");  in main()
18     printf("st address: %p\n", st);  in main()
19     printf("st_dev = %lu\n", (*st).st_dev);  in main()
20     printf("st_ino = %lu\n", (*st).st_ino);  in main()
21     printf("st_mode = %d\n", (*st).st_mode);  in main()
22     printf("st_nlink = %lu\n", (*st).st_nlink);  in main()
23     printf("st_uid = %d\n", (*st).st_uid);  in main()
24     printf("st_gid = %d\n", (*st).st_gid);  in main()
25     printf("st_rdev = %lu\n", (*st).st_rdev);  in main()
26     printf("st_size = %ld\n", (*st).st_size);  in main()
27     printf("st_blksize = %ld\n", (*st).st_blksize);  in main()
28     printf("st_blocks = %ld\n", (*st).st_blocks);  in main()
29     printf("st_atim.sec= %ld\tst_atim.nsec= %ld\n", (*st).st_atim.tv_sec, (*st).st_atim.tv_nsec);  in main()
30     printf("st_mtim.sec= %ld\tst_mtim.nsec= %ld\n", (*st).st_mtim.tv_sec, (*st).st_mtim.tv_nsec);  in main()
31     printf("st_ctim.sec= %ld\tst_ctim.nsec= %ld\n", (*st).st_ctim.tv_sec, (*st).st_ctim.tv_nsec);  in main()