/in/foo.cc: In constructor 'Node::Node()':
/in/foo.cc:24:2: error: 'cin' was not declared in this scope
  cin >> n;
  ^~~
/in/foo.cc:24:2: note: suggested alternative:
In file included from /in/foo.cc:1:0:
/usr/include/c++/6/iostream:60:18: note:   'std::cin'
   extern istream cin;  /// Linked to standard input
                  ^~~
/in/foo.cc:26:2: error: 'cout' was not declared in this scope
  cout << "Node()" << n << endl;
  ^~~~
/in/foo.cc:26:2: note: suggested alternative:
In file included from /in/foo.cc:1:0:
/usr/include/c++/6/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^~~~
/in/foo.cc:26:27: error: 'endl' was not declared in this scope
  cout << "Node()" << n << endl;
                           ^~~~
/in/foo.cc:26:27: note: suggested alternative:
In file included from /usr/include/c++/6/iostream:39:0,
                 from /in/foo.cc:1:
/usr/include/c++/6/ostream:590:5: note:   'std::endl'
     endl(basic_ostream<_CharT, _Traits>& __os)
     ^~~~
/in/foo.cc: In member function 'void Node::Out()':
/in/foo.cc:41:2: error: 'cout' was not declared in this scope
  cout << n << " ";
  ^~~~
/in/foo.cc:41:2: note: suggested alternative:
In file included from /in/foo.cc:1:0:
/usr/include/c++/6/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^~~~
/in/foo.cc: In destructor 'Node::~Node()':
/in/foo.cc:46:2: error: 'cout' was not declared in this scope
  cout << "~Node()" << n << endl;
  ^~~~
/in/foo.cc:46:2: note: suggested alternative:
In file included from /in/foo.cc:1:0:
/usr/include/c++/6/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^~~~
/in/foo.cc:46:28: error: 'endl' was not declared in this scope
  cout << "~Node()" << n << endl;
                            ^~~~
/in/foo.cc:46:28: note: suggested alternative:
In file included from /usr/include/c++/6/iostream:39:0,
                 from /in/foo.cc:1:
/usr/include/c++/6/ostream:590:5: note:   'std::endl'
     endl(basic_ostream<_CharT, _Traits>& __os)
     ^~~~
/in/foo.cc: In member function 'void LinkList::Out_List()':
/in/foo.cc:57:2: error: 'cout' was not declared in this scope
  cout << endl;
  ^~~~
/in/foo.cc:57:2: note: suggested alternative:
In file included from /in/foo.cc:1:0:
/usr/include/c++/6/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^~~~
/in/foo.cc:57:10: error: 'endl' was not declared in this scope
  cout << endl;
          ^~~~
/in/foo.cc:57:10: note: suggested alternative:
In file included from /usr/include/c++/6/iostream:39:0,
                 from /in/foo.cc:1:
/usr/include/c++/6/ostream:590:5: note:   'std::endl'
     endl(basic_ostream<_CharT, _Traits>& __os)
     ^~~~
/in/foo.cc: In constructor 'LinkList::LinkList()':
/in/foo.cc:62:2: error: 'cout' was not declared in this scope
  cout << "LinkList()" << endl;
  ^~~~
/in/foo.cc:62:2: note: suggested alternative:
In file included from /in/foo.cc:1:0:
/usr/include/c++/6/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^~~~
/in/foo.cc:62:26: error: 'endl' was not declared in this scope
  cout << "LinkList()" << endl;
                          ^~~~
/in/foo.cc:62:26: note: suggested alternative:
In file included from /usr/include/c++/6/iostream:39:0,
                 from /in/foo.cc:1:
/usr/include/c++/6/ostream:590:5: note:   'std::endl'
     endl(basic_ostream<_CharT, _Traits>& __os)
     ^~~~
/in/foo.cc:63:2: error: 'cin' was not declared in this scope
  cin >> n;
  ^~~
/in/foo.cc:63:2: note: suggested alternative:
In file included from /in/foo.cc:1:0:
/usr/include/c++/6/iostream:60:18: note:   'std::cin'
   extern istream cin;  /// Linked to standard input
                  ^~~
/in/foo.cc: In destructor 'LinkList::~LinkList()':
/in/foo.cc:84:2: error: 'cout' was not declared in this scope
  cout << "~LinkList()" << endl;
  ^~~~
/in/foo.cc:84:2: note: suggested alternative:
In file included from /in/foo.cc:1:0:
/usr/include/c++/6/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^~~~
/in/foo.cc:84:27: error: 'endl' was not declared in this scope
  cout << "~LinkList()" << endl;
                           ^~~~
/in/foo.cc:84:27: note: suggested alternative:
In file included from /usr/include/c++/6/iostream:39:0,
                 from /in/foo.cc:1:
/usr/include/c++/6/ostream:590:5: note:   'std::endl'
     endl(basic_ostream<_CharT, _Traits>& __os)
     ^~~~