#include < stdio.h >
#include < sys/types.h >
#include < sys/stat.h >

main(int argc, char **argv)
{
  int i;
  struct stat buf;
  int exists;

  for (i = 1; i < argc; i++) {
    exists = stat(argv[i], &buf);
    if (exists < 0) {
      fprintf(stderr, "%s not found\n", argv[i]);
    } else {
      printf("%10ld %s\n", buf.st_size, argv[i]);
    }
  }
}

         struct stat {
             mode_t    st_mode;     /* mode  */
             ino_t     st_ino;      /* i_number */
             dev_t     st_dev;      /* ID del device*/
             nlink_t   st_nlink;    /* numero di hard link */
             dev_t     st_rdev;     /* Ide del device se speciale */
             uid_t     st_uid;      /* user ID */
             gid_t     st_gid;      /* group ID */
             off_t     st_size;     /* dimensione in byte */
             time_t    st_atime;    /* tempo dell?ultimo accesso */
             time_t    st_mtime; /* tempo ultimo modifica */
             time_t    st_ctime;    /* tempo ultima modifica inode */
             long      st_blocks; /* numero blocchi allocati */
             long      st_blksize;/* dimensione dei blocchi in byte */
         }