/in/foo.cc: In member function 'void PolyListNode::output()':
/in/foo.cc:73:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
         for(int i=0;i<n;i++)
         ^~~
/in/foo.cc:75:11: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
           cout<<endl;
           ^~~~
/in/foo.cc: In member function 'PolyListNode PolyListNode::operator*(PolyListNode)':
/in/foo.cc:101:13: warning: unused variable 'i' [-Wunused-variable]
         int i=0,j=0;
             ^
/in/foo.cc:101:17: warning: unused variable 'j' [-Wunused-variable]
         int i=0,j=0;
                 ^