Compilare: user.cpp: In function ‘int main()’: user.cpp:58:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i<v.size(); i++) ^ user.cpp:64:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = i+1; j<v.size(); j++) ^ user.cpp:68:67: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (sine(v[j]) == sine(v[j+1]) && j<v.size()) ^