public:
void create();
void output(btree *p);
void search(int key);
void insert(btree object,btree *&p);
void del(int key,btree *&p);
void del_btree();
};

void main()
{clrscr();
 btree object;
 char punkt;
 while(punkt!=27)
 {menu();
  punkt=getch();
  clrscr();
  switch(punkt)
  {case '1':object.create();getch;break;
   case '2':object.output();getch;break;
   case '3':object.search();getch();break;
   case '4':object.insert();getch();break;
   case '5':object.del();getch();break;
  }
 }
}