View Compilation Error

0_0_37198975_8633.cpp:1:1: error: 'include' does not name a type
 include <iostream>
 ^
0_0_37198975_8633.cpp: In function 'int main()':
0_0_37198975_8633.cpp:5:8: error: 'cin' was not declared in this scope
  while(cin>>n)
        ^
0_0_37198975_8633.cpp:14:3: error: 'cout' was not declared in this scope
   cout<<sum<<endl;
   ^
0_0_37198975_8633.cpp:14:14: error: 'endl' was not declared in this scope
   cout<<sum<<endl;
              ^