foo.cc: In member function ‘void PolyListNode::output()’:
foo.cc:67:17: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
   67 |                 for(int i=0;i<n;i++)
      |                 ^~~
foo.cc:69:19: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   69 |                   cout<<endl;
      |                   ^~~~