Compilare: main.cpp: In function 'void kmp(std::string&, int*)': main.cpp:11:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 11 | for(i=1;i<s.size();i++){ | ~^~~~~~~~~ main.cpp: In function 'int gas(std::string&, std::string&, int)': main.cpp:23:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(i=st;i<a.size();i++){ | ~^~~~~~~~~ main.cpp:26:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | if(k==s.size()) return i; | ~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:37:14: 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(i=0;i<b.size();i++){ | ~^~~~~~~~~