View Compilation Error

0_0_39709952_3188.cpp: In function 'int main()':
0_0_39709952_3188.cpp:4:5: error: 'cin' was not declared in this scope
    4 |     cin>>n;
      |     ^~~
0_0_39709952_3188.cpp:1:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
  +++ |+#include <iostream>
    1 | using namespace std;
0_0_39709952_3188.cpp:13:9: error: 'cout' was not declared in this scope
   13 |         cout<<sum<<endl;
      |         ^~~~
0_0_39709952_3188.cpp:13:9: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
0_0_39709952_3188.cpp:13:20: error: 'endl' was not declared in this scope
   13 |         cout<<sum<<endl;
      |                    ^~~~
0_0_39709952_3188.cpp:1:1: note: 'std::endl' is defined in header '<ostream>'; did you forget to '#include <ostream>'?
  +++ |+#include <ostream>
    1 | using namespace std;