Compilare: main.cpp: In function 'std::vector<int> eval()': main.cpp:27:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | while (poz < sir.size() - 1 && sir[poz] != ')' && sir[poz] != ']') | ~~~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int termen()': main.cpp:50:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | while (poz < sir.size() && sir[poz] != ',' && sir[poz] != ')' && sir[poz] != ']') | ~~~~^~~~~~~~~~~~ main.cpp:68:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | for (int i = 0; i < e.size(); i++) | ~~^~~~~~~~~~ main.cpp:84:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 84 | for (int i = 0; i < e.size(); i++) | ~~^~~~~~~~~~ main.cpp:91:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | if (ind >= (e.size() + 1)/2) | ~~~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:106:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 106 | for (int i = 0; i < sir.size(); i++) | ~~^~~~~~~~~~~~ main.cpp:113:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 113 | while (i < sir.size() && '0' <= sir[i] && sir[i] <= '9') | ~~^~~~~~~~~~~~ main.cpp:124:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 124 | for (int i = 0; i < v.size(); i++) | ~~^~~~~~~~~~