/in/foo.cc:1:1: error: 'include' does not name a type
 include <iostream>
 ^~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:5:1: error: 'string' was not declared in this scope
 string a;
 ^~~~~~
/in/foo.cc:6:1: error: 'cin' was not declared in this scope
 cin >> a;
 ^~~
/in/foo.cc:6:8: error: 'a' was not declared in this scope
 cin >> a;
        ^
/in/foo.cc:7:1: error: 'cout' was not declared in this scope
 cout <<a <<endl;
 ^~~~
/in/foo.cc:7:12: error: 'endl' was not declared in this scope
 cout <<a <<endl;
            ^~~~