Compilare: user.cpp: In function ‘int U(int)’: user.cpp:15:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:20:17: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘L* {aka long long int*}’ [-Wformat=] scanf("%d", &N); ^ user.cpp:22:11: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘L* {aka long long int*}’ [-Wformat=] Q&v[i]); ^