Compilare: main.cpp: In function 'void adauga(std::string&, std::string)': main.cpp:35:22: warning: comparison of integer expressions of different signedness: 'int' and 'const long unsigned int' [-Wsign-compare] 35 | for(int i = 0; i < max(a.size(), b.size()); i++){ | ~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:37:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | if(i < a.size()) | ~~^~~~~~~~~~ main.cpp:40:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | if(i < b.size()) | ~~^~~~~~~~~~