Owl Get a Life

Compile Error

guanine.cpp:1:1: error: ‘include’ does not name a type
1 | include <iostream>
| ^~~~~~~
In file included from /usr/include/c++/9/bits/stl_algobase.h:62,
from /usr/include/c++/9/vector:60,
from guanine.cpp:2:
/usr/include/c++/9/ext/type_traits.h:162:35: error: ‘bool __gnu_cxx::__is_null_pointer’ redeclared as different kind of entity
162 | __is_null_pointer(std::nullptr_t)
| ^
/usr/include/c++/9/ext/type_traits.h:157:5: note: previous declaration ‘template<class _Type> bool __gnu_cxx::__is_null_pointer(_Type)’
157 | __is_null_pointer(_Type)
| ^~~~~~~~~~~~~~~~~
/usr/include/c++/9/ext/type_traits.h:162:26: error: ‘nullptr_t’ is not a member of ‘std’
162 | __is_null_pointer(std::nullptr_t)
| ^~~~~~~~~
In file included from /usr/include/c++/9/bits/move.h:55,
from /usr/include/c+