/in/foo.cc: In function 'int main()':
/in/foo.cc:113:2: error: 'fin' was not declared in this scope
  fin.close();
  ^~~
/in/foo.cc:113:2: note: suggested alternative: 'fit'
  fin.close();
  ^~~
  fit
/in/foo.cc:114:2: error: 'fout' was not declared in this scope
  fout.close();
  ^~~~
/in/foo.cc:114:2: note: suggested alternative: 'fit'
  fout.close();
  ^~~~
  fit