Compilare: main.cpp: In function 'int main()': main.cpp:20:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for(int f = 0 ; f < a.size() ; f ++){ | ~~^~~~~~~~~~ main.cpp:36:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for(int i = 0 ; i < aux.size() ; i ++) | ~~^~~~~~~~~~~~ main.cpp:52:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | for(int f = 0 ; f < aux.size() ; f ++) | ~~^~~~~~~~~~~~ main.cpp:67:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | for(int f = 0 ; f < aux.size() ; f ++) | ~~^~~~~~~~~~~~ main.cpp:19:9: warning: unused variable 'rot' [-Wunused-variable] 19 | int rot = 0, patr = 0, operatii = 0 ; | ^~~ main.cpp:19:18: warning: unused variable 'patr' [-Wunused-variable] 19 | int rot = 0, patr = 0, operatii = 0 ; | ^~~~