View Compilation Error

0_0_30204056_18927.cpp:1:1: error: 'include' does not name a type
 include<iostream>
 ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cmath:43:0,
                 from 0_0_30204056_18927.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/ext/type_traits.h:160:35: error: '__gnu_cxx::__is_null_pointer' declared as an 'inline' variable
   __is_null_pointer(std::nullptr_t)
                                   ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/ext/type_traits.h:160:35: error: 'bool __gnu_cxx::__is_null_pointer' redeclared as different kind of symbol
GCC4.9.2/x86_64-w64-mingw32/include/c++/ext/type_traits.h:155:5: note: previous declaration 'template<class _Type> bool __gnu_cxx::__is_null_pointer(_Type)'
     __is_null_pointer(_Type)
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/ext/type_traits.h:160:21: error: 'nullptr_t' is not a member of 'std'
   __is_null_pointer(std::nullptr_t)
                     ^