Compilare: main.cpp: In member function 'std::istream& pack::operator>>(std::istream&)': main.cpp:13:5: warning: no return statement in function returning non-void [-Wreturn-type] 13 | } | ^ main.cpp: In member function 'pack& pack::operator=(const pack&) const': main.cpp:36:16: warning: reference to local variable 'ans' returned [-Wreturn-local-addr] 36 | return ans; | ^~~ main.cpp:33:14: note: declared here 33 | pack ans; | ^~~