Compilare: user.cpp: In function ‘int main()’: user.cpp:16:10: warning: variable ‘ok’ set but not used [-Wunused-but-set-variable] bool ok; ^ user.cpp:19:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:21:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &V[i]); ^