foo.cc: In member function 'int SeqList::Search(int)':
foo.cc:27:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |                 for(int i=0;i<data.size();++i)
      |                             ~^~~~~~~~~~~~
foo.cc: In member function 'SeqList& SeqList::Search(SeqList&, SeqList&)':
foo.cc:37:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |                 for(int i=0;i<data.size();++i)
      |                             ~^~~~~~~~~~~~
foo.cc: In member function 'void SeqList::Output()':
foo.cc:46:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |                 for(int i=0;i<data.size();++i)
      |                             ~^~~~~~~~~~~~