Compilare: main.cpp: In function 'int main()': main.cpp:88:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 88 | for (int i = 2; i < sir.size(); ++i) | ~~^~~~~~~~~~~~ main.cpp:96:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for (int i = 2; i < sir.size(); ++i) | ~~^~~~~~~~~~~~ main.cpp:103:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 103 | for (int i = 2; i < sir.size(); ++i) | ~~^~~~~~~~~~~~