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

main (int argc,char **argv)
{
  struct stat st;

  if (argc!=2) {
    printf("Usage: stat <file>\n");
    exit (1);
  }
  
  if (stat(argv[1],&st) < 0 ) {
    perror(argv[1]);
    exit(1);
  }
  
  printf("access/modification/creation/modification=#%ld#%ld#%ld#%s\n",st.st_atime,st.st_mtime,st.st_ctime,ctime(&st.st_mtime));
}