Compilare: main.cpp: In function 'int main()': main.cpp:29:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(int i = 1; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp:38:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for(int i = a.size() + 1; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp:39:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | if(pi[i] == a.size() - 1) | ~~~~~~^~~~~~~~~~~~~~~ main.cpp:25:13: warning: unused variable 'cod' [-Wunused-variable] 25 | int cod = 0; | ^~~