Compilare: user.cpp: In constructor ‘BigNo::BigNo(const char*)’: user.cpp:53:15: warning: unused variable ‘aux’ [-Wunused-variable] short int*aux; ^ user.cpp: In constructor ‘BigNo::BigNo(long long int)’: user.cpp:66:9: warning: unused variable ‘i’ [-Wunused-variable] int i;long long aux=nr; ^ user.cpp: In constructor ‘BigNo::BigNo(int)’: user.cpp:85:9: warning: unused variable ‘i’ [-Wunused-variable] int i;int aux=nr; ^ user.cpp: In member function ‘BigNo& BigNo::operator++()’: user.cpp:123:16: warning: unused variable ‘aux’ [-Wunused-variable] short int* aux; ^ user.cpp:137:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In member function ‘BigNo& BigNo::operator--()’: user.cpp:142:16: warning: unused variable ‘aux’ [-Wunused-variable] short int* aux; ^ user.cpp:160:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘BigNo operator-(const BigNo&, const BigNo&)’: user.cpp:277:1: warning: control reaches end of non-void function [-Wreturn-type] } ^