Compilare: user.cpp: In function ‘int main()’: user.cpp:58:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (index < n || t != 0) { ^ user.cpp:59:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] int temp = (t % 10 + (index < n ? sol[index] % 10 : 0)); ^ user.cpp:62:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] t += (index < n ? sol[index++]/10 : 0); ^