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View Compilation Error

0_0_37888548_32485.cpp: In function 'int main()':
0_0_37888548_32485.cpp:25:3: error: 'cout' was not declared in this scope
   cout<<sum;
   ^
0_0_37888548_32485.cpp:25:3: note: suggested alternative:
In file included from 0_0_37888548_32485.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
                  ^


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