Compilare: user.cpp: In function ‘int KMP(std::string&, std::string&)’: user.cpp:18:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < A.size(); i ++) ^ user.cpp:26:32: 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:38:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < A.size(); i ++) ^ user.cpp:46:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < B.size(); i ++) ^ user.cpp:50:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (k == A.size()) ^ user.cpp: In function ‘int main()’: user.cpp:144:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < Sol.size(); i ++) ^