/in/foo.cc: In function 'int main()':
/in/foo.cc:8:6: error: 'inti' was not declared in this scope
  for(inti=1;i<=n;i++)
      ^~~~
/in/foo.cc:8:13: error: 'i' was not declared in this scope
  for(inti=1;i<=n;i++)
             ^
/in/foo.cc:14:17: error: 'print' was not declared in this scope
  print("%.4f",ss);
                 ^