Compilare: user.cpp: In function ‘int getVecin(std::vector<int>, int*)’: user.cpp:20:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v.size();i++) ~^~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:69:6: warning: unused variable ‘i’ [-Wunused-variable] int i,j; ^ user.cpp:69:8: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^ user.cpp:70:7: warning: unused variable ‘control’ [-Wunused-variable] int *control,*tata; ^~~~~~~ user.cpp:70:16: warning: unused variable ‘tata’ [-Wunused-variable] int *control,*tata; ^~~~