Compilare: main.cpp: In function 'int parseNr(std::string&, int&)': main.cpp:34:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | while (poz < s.size() && isdigit(s[poz])) | ~~~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:77:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for (int poz = 0; poz < s.size(); poz++) | ~~~~^~~~~~~~~~