Compilare: main.cpp: In function 'int main()': main.cpp:33:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(int i=1;i<v.size()&& ok;i++) | ~^~~~~~~~~ main.cpp:37:22: warning: 'nr2' may be used uninitialized in this function [-Wmaybe-uninitialized] 37 | out<<"DA"<<endl<<nr2; | ^~~