/in/foo.cc: In function 'int main()':
/in/foo.cc:36:14: warning: 'anum' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<anum<<" "<<bnum;
              ^~~
/in/foo.cc:36:23: warning: 'bnum' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<anum<<" "<<bnum;
                       ^