Compilare: user.cpp: In function ‘int main()’: user.cpp:14:15: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘ll* {aka long long int*}’ [-Wformat=] scanf("%d",&n); int nr=0; ^ user.cpp:12:28: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tg.in","r",stdin); ^ user.cpp:13:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tg.out","w",stdout); ^ user.cpp:14:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); int nr=0; ^