Compilare: main.cpp: In function 'int main()': main.cpp:15:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | while (pozitie < str.size()){ | ~~~~~~~~^~~~~~~~~~~~ main.cpp:19:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | while (pozitie < str.size() && !litera(str[pozitie])){ | ~~~~~~~~^~~~~~~~~~~~ main.cpp:22:24: 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 (pozitie < str.size() && litera(str[pozitie])){ | ~~~~~~~~^~~~~~~~~~~~