/in/foo.cc: In function 'int main()':
/in/foo.cc:21:27: warning: 'q' may be used uninitialized in this function [-Wmaybe-uninitialized]
            cout<<p<<" "<<q;
                           ^
/in/foo.cc:21:21: warning: 'p' may be used uninitialized in this function [-Wmaybe-uninitialized]
            cout<<p<<" "<<q;
                     ^~~