Compilare: main.cpp: In function 'int main()': main.cpp:23:21: 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 (int i = 1; i < c.size(); i++) { | ~~^~~~~~~~~~ main.cpp:26:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | while (R < c.size() && c[R - L]== c[R]) | ~~^~~~~~~~~~ main.cpp:37:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | while (R < c.size() && c[R - L] == c[R]) | ~~^~~~~~~~~~ main.cpp:44:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for (int i = b.size() + 1; i < c.size(); i++) { | ~~^~~~~~~~~~ main.cpp:53:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for (int i = 1; i < c.size(); i++) { | ~~^~~~~~~~~~ main.cpp:56:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | while (R < c.size() && c[R - L]== c[R]) | ~~^~~~~~~~~~ main.cpp:67:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | while (R < c.size() && c[R - L] == c[R]) | ~~^~~~~~~~~~ main.cpp:74:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for (int i = b.size() + 1; i < c.size(); i++) { | ~~^~~~~~~~~~ main.cpp:83:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | for (int i = 1; i <= b.size() / 2; i++) | ~~^~~~~~~~~~~~~~~