Compilare: main.cpp: In function 'int parseParan(int&)': main.cpp:52:22: 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 = 1; i <= buffer.size(); i++) | ~~^~~~~~~~~~~~~~~~ main.cpp:56:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for(int i = 1; i <= buffer.size(); i++) | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:104:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 104 | while(pos < s.size()) | ~~~~^~~~~~~~~~ main.cpp: In function 'int parseNext(int&)': main.cpp:97:12: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized] 97 | return ret; | ^~~