Compilare: main.cpp: In function 'int main()': main.cpp:43:53: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | while(rasp[start]!=start&&rasp[start]&&start!=s.size()) | ~~~~~^~~~~~~~~~ main.cpp:45:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | if(start==s.size()) | ~~~~~^~~~~~~~~~