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View Compilation Error

0_0_34886787_27518.cpp: In function 'int main()':
0_0_34886787_27518.cpp:8:4: error: 'cin' was not declared in this scope
    cin>>n;
    ^
0_0_34886787_27518.cpp:8:4: note: suggested alternative:
In file included from 0_0_34886787_27518.cpp:2:0:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:60:18: note:   'std::cin'
   extern istream cin;  /// Linked to standard input
                  ^
0_0_34886787_27518.cpp:15:6: error: 'cout' was not declared in this scope
      cout<<k<<endl;
      ^
0_0_34886787_27518.cpp:15:6: note: suggested alternative:
In file included from 0_0_34886787_27518.cpp:2:0:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^
0_0_34886787_27518.cpp:15:15: error: 'endl' was not declared in this scope
      cout<<k<<endl;
               ^
0_0_34886787_27518.cpp:15:15: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39:0,
                 from 0_0_34886787_27518.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/ostream:564:5: note:   'std::endl'
     endl(basic_ostream<_CharT, _Traits>& __os)
     ^


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