Compilare: user.cpp: In function ‘int main()’: user.cpp:43:21: warning: statement has no effect [-Wunused-value] for(help; help >= 2; help --) ^ user.cpp:12:44: warning: variable ‘j’ set but not used [-Wunused-but-set-variable] long long n , i , lastsum , new_last , j , poz , nr , help; ^ user.cpp:12:48: warning: variable ‘poz’ set but not used [-Wunused-but-set-variable] long long n , i , lastsum , new_last , j , poz , nr , help; ^~~ user.cpp:10:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("valoare.in","r",stdin); ^ user.cpp:11:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("valoare.out","w",stdout); ^ user.cpp:13:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld", &n); ^ user.cpp:16:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld" , &nr); ^