Compilare: main.cpp: In function 'int main()': main.cpp:29:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for (int j = 0; j < sir.size(); j++) { | ~~^~~~~~~~~~~~ main.cpp:31:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | if (j > 0 && j + 1 < sir.size()) { | ~~~~~~^~~~~~~~~~~~ main.cpp:37:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for (int j = 0; j < sir.size(); j++) { | ~~^~~~~~~~~~~~