Compilare: main.cpp: In function 'int main()': main.cpp:24:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(i = 0; i < s.size(); i++){ | ~~^~~~~~~~~~ main.cpp:32:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(i = 0; i < s.size() - 2; i++) | ~~^~~~~~~~~~~~~~ main.cpp:37:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for(i = 0; i < s.size() - 2; i++) | ~~^~~~~~~~~~~~~~ main.cpp:44:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for(i = 0; i < s.size() - 1; i++){ | ~~^~~~~~~~~~~~~~ main.cpp:52:30: 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(i = 0; i < s.size() - 3; i++) | ~~^~~~~~~~~~~~~~ main.cpp:57:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(i = 0; i < s.size() - 2; i++) | ~~^~~~~~~~~~~~~~ main.cpp:11:15: warning: unused variable 'j' [-Wunused-variable] 11 | int n, i, j, cer; | ^