Compilare: main.cpp: In function 'void spatiu(const std::string&, int&)': main.cpp:8:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 8 | while (p<s.size() && s[p]==' ') { | ~^~~~~~~~~ main.cpp: In function 'long long int factor(const std::string&, int&)': main.cpp:17:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | if (p<s.size() && s[p]=='(') { | ~^~~~~~~~~ main.cpp:21:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | if (p<s.size() && s[p]==')') { | ~^~~~~~~~~ main.cpp:26:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | if (p<s.size() && isdigit(s[p])) { | ~^~~~~~~~~ main.cpp:28:17: 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() && isdigit(s[p])) { | ~^~~~~~~~~ main.cpp: In function 'long long int termen(const std::string&, int&)': main.cpp:40:13: 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 (p<s.size() && (s[p]=='*' || s[p]=='/')) { | ~^~~~~~~~~ main.cpp: In function 'long long int expresie(const std::string&, int&)': main.cpp:57:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | while (p<s.size() && (s[p]=='+' || s[p]=='-')) { | ~^~~~~~~~~