View Compilation Error

0_0_27357359_31654.cpp: In function 'int main()':
0_0_27357359_31654.cpp:15:13: error: 'cin' was not declared in this scope
             cin>>array1[i];
             ^
0_0_27357359_31654.cpp:43:9: error: 'cout' was not declared in this scope
         cout<<sum<<endl;
         ^
0_0_27357359_31654.cpp:43:20: error: 'endl' was not declared in this scope
         cout<<sum<<endl;
                    ^