Compilare: main.cpp: In function 'void getLps(std::__cxx11::string, int*)': main.cpp:21:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < str.size()) { ~~^~~~~~~~~~~~ main.cpp: In function 'void getKMP(std::__cxx11::string, std::__cxx11::string, int*)': main.cpp:43:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < str.size()) { ~~^~~~~~~~~~~~ main.cpp:50:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (j == pattern.size()) { ~~^~~~~~~~~~~~~~~~~ main.cpp:55:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i < str.size() && pattern[j] != str[i]) { ~~^~~~~~~~~~~~