text: #ifndef GLOBAL_H
  #define GLOBAL_H
  #include "superblock.h"
  #include "inode.h"
  #include "fprocess.h"
  #include <iostream>
  extern SuperBlock *superblock;
  extern int superblock_startaddress;
  extern int inode_startaddress;
  extern int inode_bitmap_startaddress;
  extern int block_bitmap_startaddress;
  extern int inode_startaddress;
  extern int block_startaddress;
  extern int sum_size;
  
  extern int root_dir_inode_address;
  extern int current_dir_inode_address;
  extern int user_configure_dir_inode_address;
  extern int user_own_dir_inode_address;
  extern char current_dir_name[200];
  extern char current_user_name[100];
  extern char current_user_group_name[100];
  
  extern bool isLogin;
  extern bool quit_flag;
  extern FILE *fw;
  extern FILE *fr;
  extern int copy_to_paste_inode_address;
  extern bool inode_bitmap[INODE_NUM];
  extern bool block_bitmap[BLOCK_NUM];
  
  extern file u_ofile[10];
  extern file sys_ofile[20];
  extern inode_mem mem_inode[10];
  #endif
  