Compilare: main.cpp: In function 'void adun(std::vector<int>&, std::vector<int>&)': main.cpp:30:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = a.size(); i < b.size(); i++, x = x/10) ~~^~~~~~~~~~ main.cpp:35:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = b.size(); i < a.size(); i++, x = x/10) ~~^~~~~~~~~~