Compilare: main.cpp: In function 'void inmultire()': main.cpp:13:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v.size(); ++i) { ~~^~~~~~~~~~ main.cpp:16:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v.size(); ++i) { ~~^~~~~~~~~~ main.cpp:18:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i == v.size() - 1) ~~^~~~~~~~~~~~~~~