Compilare: main.cpp: In function 'std::string obtineSirFinal(std::string)': main.cpp:11:23: 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 (int i = 0; i < succesiune_taste.length(); ++i) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'bool esteCorectParantezat(std::string)': main.cpp:35:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | for (int i = 0; i < sir_ecran.length(); ++i) | ~~^~~~~~~~~~~~~~~~~~~~