/in/foo.cc: In function 'int main()':
/in/foo.cc:11:20: warning: 'so' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<sj<<endl<<so;
                    ^
/in/foo.cc:11:8: warning: 'sj' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<sj<<endl<<so;
        ^~