Compilare: user.cpp: In function ‘int find_word(std::vector<std::basic_string<char> >&, int&, int)’: user.cpp:47:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = cuv_viz + 1; i < DICT.size(); i++) ^ user.cpp:52:55: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < strlen(DICT[i].c_str()); j++) ^