Compilare: main.cpp: In function 'int get_number(const std::string&, int&)': main.cpp:40:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | while(poz < s.size() && isdigit(s[poz])) | ~~~~^~~~~~~~~~ main.cpp: In function 'void afis_vect(std::vector<int>)': main.cpp:52:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | for(int i=0; i<sir.size(); i++) | ~^~~~~~~~~~~ main.cpp: In function 'std::vector<int> paranteza()': main.cpp:147:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 147 | while(expresie[ind] != ')' && ind < expresie.size()) | ~~~~^~~~~~~~~~~~~~~~~ main.cpp:176:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 176 | for(int i=1; i<stiva.size(); i++) | ~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:219:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 219 | while(ind < expresie.size()) | ~~~~^~~~~~~~~~~~~~~~~ main.cpp:248:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 248 | for(int i=1; i<stiva.size(); i++) | ~^~~~~~~~~~~~~