Compilare: user.cpp: In member function ‘nr_mare nr_mare::operator-(int)’: user.cpp:109:9: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘char div_et_imp(nr_mare, int)’: user.cpp:147:1: warning: control reaches end of non-void function [-Wreturn-type] } ^