Compilare: main.cpp: In function 'void str(std::string, std::string)': main.cpp:12:16: warning: comparison of integer expressions of different signedness: 'int' and 'const std::__cxx11::basic_string<char>::size_type' {aka 'const long unsigned int'} [-Wsign-compare] 12 | while (pos != std::string::npos) { | ~~~~^~~~~~~~~~~~~~~~~~~~ main.cpp:18:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for (int i = 0; i < pozitii.size(); i++) { | ~~^~~~~~~~~~~~~~~~