Compilare: user.cpp: In function ‘std::vector<int> makePrefix(std::string)’: user.cpp:10:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 2; i <= pattern.length(); i++) { ^ user.cpp: In function ‘std::vector<int> kmp(std::string, std::string)’: user.cpp:27:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (indexText == text.length()) { ^ user.cpp:33:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(indexPattern == pattern.length()) { ^