text: #ifndef TRUE
  #define TRUE 1
  #endif
  #ifndef FALSE
  #define FALSE 0
  #endif
  #define NOT_EXIST_EXCEPTION NULL
  #define MAX_ID 200
  
  struct slist {
      char id[MAX_ID];
      int state;
      int descripteurSocket;
      struct slist* next;
  };
  
  typedef struct slist LIST;
  
  LIST* getElementById(char*, LIST*);
  LIST* getElementByDescriptor(int, LIST*);
  int in_list_id (char*, LIST*);
  LIST* new_id(char*);
  LIST* new_elem(char*, int);
  void add_id(LIST**, char*);
  void add_elem(LIST**, char*, int);
  void print_r(LIST*, int);