Compilare: main.cpp: In function 'int main()': main.cpp:12:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 12 | for(i=0;i<s.size();i++){ | ~^~~~~~~~~ main.cpp:14:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | while(p1>0 && p2<s.size() && s[p1]==s[p2]){ | ~~^~~~~~~~~ main.cpp:17:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | if(p2==s.size()) | ~~^~~~~~~~~~ main.cpp:20:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for(i=0;i<s.size();i++){ | ~^~~~~~~~~ main.cpp:22:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | while(p1>0 && p2<s.size() && s[p1]==s[p2]){ | ~~^~~~~~~~~ main.cpp:25:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | if(p2==s.size()) | ~~^~~~~~~~~~