/in/polynomial.cpp: In copy constructor 'Polynomial::Polynomial(const Polynomial&)':
/in/polynomial.cpp:10:23: 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:23:23: 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:44:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < this->degree; i++){
                     ~~^~~~~~~~~~~~~~
/in/polynomial.cpp:45:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int j = 0; j < that.degree; j++){
                         ~~^~~~~~~~~~~~~