/in/foo.cc: In function 'int main()':
/in/foo.cc:7:2: error: 'cin' was not declared in this scope
  cin>>dan1;
  ^~~
/in/foo.cc:7:2: note: suggested alternative:
In file included from /in/foo.cc:2:0:
/usr/include/c++/6/iostream:60:18: note:   'std::cin'
   extern istream cin;  /// Linked to standard input
                  ^~~
/in/foo.cc:15:2: error: 'cout' was not declared in this scope
  cout<<fixed<<setprecision(2);
  ^~~~
/in/foo.cc:15:2: note: suggested alternative:
In file included from /in/foo.cc:2:0:
/usr/include/c++/6/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^~~~
/in/foo.cc:15:8: error: 'fixed' was not declared in this scope
  cout<<fixed<<setprecision(2);
        ^~~~~
/in/foo.cc:15:8: note: suggested alternative:
In file included from /usr/include/c++/6/iomanip:40:0,
                 from /in/foo.cc:1:
/usr/include/c++/6/bits/ios_base.h:1041:3: note:   'std::fixed'
   fixed(ios_base& __base)
   ^~~~~
/in/foo.cc:15:29: error: 'setprecision' was not declared in this scope
  cout<<fixed<<setprecision(2);
                             ^
/in/foo.cc:15:29: note: suggested alternative:
In file included from /in/foo.cc:1:0:
/usr/include/c++/6/iomanip:195:3: note:   'std::setprecision'
   setprecision(int __n)
   ^~~~~~~~~~~~