Compilare: user.cpp: In function ‘int KMP(std::string&, std::string&)’: user.cpp:19:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < A.size(); i ++) ^ user.cpp:27:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < B.size(); i ++) ^ user.cpp: In function ‘bool Verif(std::string&, std::string&)’: user.cpp:39:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < A.size(); i ++) ^ user.cpp:47:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < B.size(); i ++) ^ user.cpp:51:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (k == A.size()) ^ user.cpp: In function ‘int main()’: user.cpp:157:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < Sol.size(); i ++) ^