Compilare: main.cpp: In function 'void getz(std::__cxx11::string, int*)': main.cpp:19:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<s.size(); i++) ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:106:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=a.size()-b.size()+1; i++) ~^~~~~~~~~~~~~~~~~~~~~ main.cpp:116:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=b.size()/2; i++) ~^~~~~~~~~~~~