View difference between Paste ID: BEDXsqFj and 2VayrKyW

 void ls_directory(char *dir_name, int level)
 {
     DIR *p_dir = NULL; // pointer to a directory
     struct dirent *p_entry; // pointer to a directory entry
     if(!(p_dir = opendir(dir_name)))
     {
         fprintf(stderr, "Error while opening directory %s: %s\n", dir_name, strerror(errno));
         return;
     }
 
     size_t dir_name_len = strlen(dir_name);
     printf("%s\n", dir_name);
     while((p_entry = readdir(p_dir)))
     {
         if(is_dir(p_entry->d_name))
         {
             // do not list the parent directories
             if(strcmp(p_entry->d_name, ".") != 0 && strcmp(p_entry->d_name, "..") != 0)
             {
                 size_t name_len = strlen(p_entry->d_name);
-
+
                 memcpy(subname, dir_name, dir_name_len);
                 subname[dir_name_len] = '/';
                 memcpy(subname + dir_name_len + 1, p_entry->d_name, name_len+1);
                 ls_directory(subname, level + 1);
                 free(subname);
             }
         }
         else
         {
             printf("%s\n", p_entry->d_name);
         }
     }
     closedir(p_dir);
 }