Compilare: user.cpp: In member function ‘bigNum bigNum::suma(const bigNum&, std::vector<int>)’: user.cpp:97:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(cnt1 < digits.size() && cnt2 < othnow.size()) { ^ user.cpp:97:61: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(cnt1 < digits.size() && cnt2 < othnow.size()) { ^