Compilare: main.cpp: In function 'void makekmp(std::string&)': main.cpp:8:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 8 | for(int i = 1; i < s.size(); i ++) { | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:28:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | for(int i = a.size(); i < c.size(); i ++) { | ~~^~~~~~~~~~ main.cpp:29:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | if(kmp[i] == a.size()) { | ~~~~~~~^~~~~~~~~~~