Imitating ls in ansi C

Question

I have a code to mimic ls -la in ansi C, but when I change the directory from . (current directory) to any other it keep saying No such file or directory, any ideas why?

code:

DIR * mydir;
struct dirent * mydirent;
struct stat st;
char outstr[100];
struct tm *tmp;
mydir = opendir("..");
while ((mydirent=readdir(mydir))!=NULL)
  if ( stat(mydirent->d_name,&st) != -1 ) {
    tmp = localtime(&st.st_mtime);
    if (tmp == NULL)
      perror("localtime ERROR: ");
    else {
      strftime(outstr, sizeof(outstr), "%d/%m/%Y", tmp);
      printf("%o\t%d\t%d\t%d\t%d\t%s\t%s\n",
    st.st_mode, st.st_nlink, st.st_uid, st.st_gid, 
    st.st_size, outstr, mydirent->d_name);
    }
  } 
  else 
    perror("stat ERROR: ");
closedir(mydir);

Answer 1

You need to concatenate the directory path and the file name.

stat(mydirent->d_name,&st) /* d_name is just the name, not the full path. */

Use s(n)printf or something like that:

sprintf(fullpath, "%s/%s", dirpath, mydirent->d_name);
stat(fullpath, &st);