/in/foo.cc:1:1: error: 'include' does not name a type
 include<iostream>
 ^~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:8:1: error: 'cin' was not declared in this scope
 cin >> n;
 ^~~
/in/foo.cc:30:1: error: 'cout' was not declared in this scope
 cout << t;
 ^~~~