Compilare: main.cpp: In function 'bool s2_in_s1_at_poz(std::string, std::string, int)': main.cpp:20:24: 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 (int i = 0 ; i < s2.size() ; ++i) { | ~~^~~~~~~~~~~ main.cpp: In function 'bool expresie(std::string&, int&)': main.cpp:28:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | while (p < s.size() && s2_in_s1_at_poz(" OR ", s, p)) { | ~~^~~~~~~~~~ main.cpp: In function 'bool termen(std::string&, int&)': main.cpp:38:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | while (p < s.size() && s2_in_s1_at_poz(" AND ", s, p)) { | ~~^~~~~~~~~~