foo.cpp:1:1: error: 'include' does not name a type
 include <iostream>
 ^
foo.cpp: In function 'int main()':
foo.cpp:25:1: error: 'cin' was not declared in this scope
 cin >> n;
 ^
foo.cpp:38:5: error: 'cout' was not declared in this scope
     cout << already % 10 << endl;
     ^
foo.cpp:38:29: error: 'endl' was not declared in this scope
     cout << already % 10 << endl;
                             ^
foo.cpp:42:1: error: 'cout' was not declared in this scope
 cout<<already;
 ^
foo.cpp:43:22: error: 'endl' was not declared in this scope
 cout << c[yu - 1] << endl;
                      ^