Compilare: main.cpp: In function 'int hs(std::string, int)': main.cpp:27:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for(int i = 0; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp: In function 'int hp(std::string, int)': main.cpp:37:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for(int i = 0; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:87:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 87 | for(int i = lenb; i <= a.size(); i++) | ~~^~~~~~~~~~~ main.cpp:68:9: warning: variable 'ha' set but not used [-Wunused-but-set-variable] 68 | int ha, hb, poz = 0, chb = 0, lenb = 0, ap = 0; | ^~ main.cpp:68:17: warning: unused variable 'poz' [-Wunused-variable] 68 | int ha, hb, poz = 0, chb = 0, lenb = 0, ap = 0; | ^~~ main.cpp:70:10: warning: unused variable 'c' [-Wunused-variable] 70 | char c; | ^