/in/polynomial.cpp: In copy constructor 'Polynomial::Polynomial(const Polynomial&)':
/in/polynomial.cpp:10:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<=that.degree;i++){
               ~^~~~~~~~~~~~~
/in/polynomial.cpp: In member function 'Polynomial& Polynomial::operator=(const Polynomial&)':
/in/polynomial.cpp:22:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<=that.degree;i++){
               ~^~~~~~~~~~~~~
/in/polynomial.cpp: In member function 'Polynomial Polynomial::operator+(const Polynomial&)':
/in/polynomial.cpp:33:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0; i<=that.degree; i++){
                ~^~~~~~~~~~~~~
/in/polynomial.cpp:39:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0; i<=that.degree ;i++){
                ~^~~~~~~~~~~~~
/in/polynomial.cpp:42:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0; i<=this->degree ;i++){
                ~^~~~~~~~~~~~~~
/in/polynomial.cpp:50:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0; i<=that.degree; i++){
                ~^~~~~~~~~~~~~
/in/polynomial.cpp: In member function 'Polynomial Polynomial::operator*(const Polynomial&)':
/in/polynomial.cpp:67:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<=this->degree;i++){
              ~^~~~~~~~~~~~~~
/in/polynomial.cpp:68:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=0;j<=that.degree;j++){
               ~^~~~~~~~~~~~~