/in/foo.cc: In function 'int main()':
/in/foo.cc:16:6: error: expected primary-expression before 'int'
  fok(int i=1;i<=n;i++)
      ^~~
/in/foo.cc:16:14: error: 'i' was not declared in this scope
  fok(int i=1;i<=n;i++)
              ^