foo.cc: In member function 'bool SeqList::find(int)':
foo.cc:14:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |                 for(int i=0;i<num.size();i++)
      |                             ~^~~~~~~~~~~
foo.cc: In member function 'void SeqList::output()':
foo.cc:21:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |                 for(int i=0;i<num.size();i++)
      |                             ~^~~~~~~~~~~

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