Compilare: user.cpp: In function ‘int main()’: user.cpp:30:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < decan.size() && j < miha.size()) ^ user.cpp:30:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < decan.size() && j < miha.size()) ^