Compilare: main.cpp: In function 'std::vector<int> Evaluare()': main.cpp:23:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | while(poz<expresie.size() && expresie[poz]=='+') | ~~~^~~~~~~~~~~~~~~~ main.cpp: In function 'std::vector<int> Termen()': main.cpp:36:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | while(poz<expresie.size() && expresie[poz]=='*') | ~~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:80:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 80 | for(int i=0; i<r.size(); i++) | ~^~~~~~~~~