/in/foo.cc: In function 'int main()':
/in/foo.cc:37:16: warning: 'l' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<w<<':'<<l<<endl<<endl;
                ^
/in/foo.cc:37:11: warning: 'w' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<w<<':'<<l<<endl<<endl;
           ^~~